Using 2x6 for roof decking

2 x 6 nominal Southern Pine Lumber. It is machined with a single tongue-and-groove, a V-Joint face, and is END MATCHED allowing the use of RANDOM LENGTH pieces. The material used is graded to Southern Pine Inspection Bureau standards and meets the American Institute of Timber Construction standards for tongue-and-groove heavy timber decking 2x6 is thicker and is stronger, but is also more expensive. Spacing between deck boards provide a few critical functions. The primary function is to drain water from the deck. Overall, conventional decking profiles should be installed such that when seasoned, will have gaps between 1/8 and 1/4 of an inch 2x6 tongue and groove as roof sheathing 18x16 gable roof over my deck with exposed rafters and no ceiling. Plan is to use 2x6 T&G sheathing, since it would require no plywood or OSB overlay and 1 roofing nails wouldn't penetrate beneath A 2×6 is a versatile piece of dimensional lumber suitable for a diverse range of structural needs, ranging from beams for decking to rafters for a roof. While a 2×6 can handle a broad range of applications, determining how far a 2×6 can span when used for structural framing can be difficult to calculate Obviously, you have to attach the 2x6 decking to the primary structural members sufficiently to transfer all the various roof loads, then maybe btwn. planks, and then maybe plywd. atop the decking for additional stiffening and strength

2 in. x 6 in. Tongue and Groove Decking provides the customer with an outstanding solution for roof and subfloor structure where exposed to the lower level. This Tongue and Groove Decking combines appearance grade with unsurpassed quality of finish, making them ideal for exposed ceiling applications My front deck (480 sq) has 2x6 decking and the rear deck (300 sq) has 5/4 decking, both 16 on center. You will get most of any bounce on a deck from the span/size of the joists, not the decking, so one up your joists for a sturdy deck. Quality wise, I prefer the 5/4 decking. It doesn't seem to check as easily as the 2x

Rafters/trusses in such construction can be spaced as widely as 8' and require much more substantial sheathing. Common materials include 2x4 or 2x6 tongue-and-groove decking or specialty fiberboard sheathing 2 TONGUE AND GROOVE ROOF DECKING. NAILING SCHEDULES. At each support two-inch decking shall be toenailed through the tongue and face nailed with one nail, using 16d common nails. Three and four-inch decking shall be toenailed at each support with one 40d nail and face nailed with one 60d nail. Courses for three and four inch decking shall b

2x6 Tongue and Groove Fir & Larch Roof Decking http://www.fp-supply.com/st-louis-center-match-roof-decking-tandg.htm 2x6 Tongue And Groove Decking Span Decks Ideas within measurements 1936 X 1463. 2x6 Tongue And Groove Roof Decking Span - For the large part, You're Going to be pitching a few People, and Your deck is merely likely to be looked at behind closed doors. Never overlook the deck needs to synchronize with the house, so as to create a harmonious appearance 18. 1X stock is fine if you have 16 inch on center joists, and the joists are themselves sized properly. Using 2X stock over undersized joists does help make the deck feel more solid. If you have 24 OC joists, I'd definitely stay with the 2X decking. An other option if you have wider joist spacing is to add a joist between each one if possible.

2x6 Douglas Fir Tongue and Groove Decking As one of the hardest and most dense of the softwood species, Douglas Fir makes a practical, as well as a beautiful, addition to your home The 2 in. x 6 in. x 16 ft. Pressure-Treated Decking Board is ideal for aboveground application. It has a lifetime limited warranty against rot, decay and termites. Lifetime limited warranty against rot, decay, and termite

The existing deck, with a surface of 2x6 pressure-treated lumber, rested upon wood sleepers placed directly on a poorly installed and leaking rubber membrane roof. The roof framing was recessed inside a level parapet topping the 8-inch-thick brick walls, with single 2x10 Doug fir joists set in the wall at 12 inches on-center This job required 2 area's of roof decking to be replaced due to severe warping and rotting. We also sealed 3 pipe collars and installed 2 new caps at the pe.. I wish to use 2x6 T&G Decking over 4x10s (spanning 12 ft) on a 3/12 pitched roof (deck) overhang in the Pacific Northwest west of the Cascade Mtn. range. I am building a roof over a deck using 6 x 6's as posts spaced 12' apart (12' x 12'). The roof will have 4 x 6's for rafters on a 9/12 pitch spaced 3' apart (0, 3, 6, 9, 12'). Also to know, what is the maximum span for a 2x6 deck joist? Decking boards span from joist to joist. If you use 5/4 decking, joists must be no farther apart than 16 inches. Decking made of 2x4s or 2x6s can span up to 24 inches Rafter Template Roof Framing Plan. Cut the six 2x6 rafters following the RAFTER TEMPLATE. Cut the 2x6 ledger at 70 ¾and bevel the top edge at 26.5 degrees so the overall width is 4 5/16. Mark the rafter layout onto the wall plates and ledger, as shown in the ROOF FRAMING PLAN, then install the ledger flush with the back side of the rear wall

Should I use 2x6 or 2x8 for deck? - FindAnyAnswer

We've detected you are using a browser that is missing critical features. T-111 Siding SALE + Plywood + Lumber + Fence + Deck + Roof $32 (Woodland WA. East Edge of I-5 near Exit 21) Cedar Decking $2.79 2x6 More outdoor wood Deck Fencing, Posts &trim! $0. I am putting in a deck. A portion of it is 24 high, the rest will be 8 high. I'm using 2x6 joists, and double 2x6 boards for beams. My question is, what size wood do I need to use for the ledger.

2x6 tongue and groove as roof sheathing - DoItYourself

How Far Can a 2x6 Span Without Support

2x6 T&G as roof diaphragm - Structural engineering general

However, rafters with light-weight roofing and a drywall ceiling have a dead load of 15psf while a plaster ceiling is 20psf. Heavy roofing changes the dead load rating to 25psf and 30psf respectively. How Far Can 2×6 Decking Span? Decking is the material that spans and fastens to the joists upon which you walk and place furniture The use of wood decking is a common structural application spanning between purlins or rafters in a timber framing system.Solid 2x6 decking is available from SWC in Douglas Fir, Southern Yellow Pine and Spruce. Laminated roof deck in 3x6 and 4x6 Fir / Larch is also available from Structural Wood Corporation's inventory Wood decking is commonly available in 2x6 and 5/4 x 6 profiles. 5/4 x 6 is produced specifically for decking and is milled with a radius edge or bull nose. 2x6 is thicker and is stronger, but is also more expensive. Spacing between deck boards provide a few critical functions. The primary function is to drain water from the deck

IRC in the most restrictive condition allows a maximum span of 8'4 for a 2x8 joist made of redwood, western cedar, ponderosa pine, or red pine. Since you did not mention which way you were going to run the joists, if you need a 10 foot span you would need either a 2x8 or a 2x10, depending on the species of lumber you use 2x6 joists should only be used on ground-level decks that do not require, and will not provide for, any guards. Should I use 2x4 or 2x6 for roof? As small as it is 2x4 on 16 centers would be fine. Use a 2x6 for the ridge. If you plan to tie the roof together, 2x4's would work Roof decking is southern pine as manufactured by S.I. Storey Lumber Co., Inc. It is nominal 2 x 6, 3 x 6, or 4 x 6 in #1 or #2 grade and kiln dried. Maximum moisture content is 19% for 2 x 6, 3 x 6 and 4 x 6. Decking is machined to a single or double tongue and groove EVIS pattern. (See figures 1 and 2) Lengths Decking pieces may be of.

2 in. x 6 in. x 12 ft. Select Tongue & Groove Decking ..

  1. A roof deck is almost certainly going to be required by law to have handrails. The specific requirements will vary from one location to another. When you know the requirements, use 2x2 lumber for the rail posts, and connect a 2x6 to their tops edgewise for the handrail
  2. Fastening 5/4 cedar to deck joists using the same method used to attach 5/4 pressure-treated decking is the least expensive method. However, since you spent the money on cedar, you may choose to use metal hidden fasteners for a clean, aesthetic look. Metal hidden fasteners bite into the sides of the lumber and fasten to the joists
  3. g gun, shooting a 3½ clipped-head nail on an angle through the tongue just like installing standard 1x T&G with a finishing nailer. Reef in the boards tight to each other with a big old beater of a chisel
  4. Roof sheathing (or decking) is one of those elements. In the U.S., it is almost always composed of wood—usually OSB (oriented strand board) or plywood. OSB is lightweight, relatively inexpensive, and strong enough to resist bending or breaking should someone walk on the roof. Plywood is a bit more expensive, but is usually stronger and is.
  5. e angles needed where the rafters will meet the ledger board. Rafters are placed on 24 centers, and attached to the beams and settle joists are attached as needed (Image 1)
  6. You could but I personally wouldn't for the same reason bob Busch cited. If you go down to your local lumber yard, in my case Home Dumpo, and just hold up the various grades of lumber you probably can spot the differences. The Pressure Treated mat..
  7. Homes started being built in the 70's using 2x6's so we could increase insulation levels. The energy crisis was on and higher insulation levels reduced our heating costs

2x6 or 5/4 for deck boards? Green Tractor Tal

  1. g have been extensively damaged by leaks it is usually necessary to repair the roof from outside the building. Before replacing roof decking, consider re- decking the roof with insulated structural panels that include eaves to ridge ventilation in their design
  2. Don't use a board any smaller than what is recommended for that spacing for that species. So, for 24 o.c. if you use cedar, it can't be smaller than a 2x6, Hemlock, can't be smaller than 5/4x6. Decking Span Table. Recommended Maximum Decking Span. Wood Species
  3. Chisel technique with nails used for decking spacers. Start nails into the deck board. Drive a 3/4-in. wood chisel into the joist and tight to the edge of the deck board with the bevel facing you. Pull back on the chisel until the deck board is tight to your spacer and drive the nails. Clamp technique with nails for decking spacers

Old House Restoration Guide Roofing Roof Sheathing

Use the Joist Span table to find the acceptable joist sizes for a 12' span, 2x8s at 12 O.C., 2x10s at 16 O.C. or 2x12s at 24 O.C. Use the Beam Size table and find the 8' post spacing column. With a 12' deck span, the beam may be either two 2x8s or two 2x10s, depending on wood used. CASE II SOLUTION Then remove the stringers and save the best one for a pattern. Photo 3: Add drip cap. Tuck 1-1/2 in. wide drip cap under the siding and building paper and over the deck ledger to direct water away from the house. Tearing out the old rails and decking comes first. You can knock off most of the railing with a sledge An essential part of planning a patio roof or gazebo project is determining the number, size, and spacing of rafters, beams, and posts, according to the loads they will carry. Maximum Rafter Spans for a Patio Roof. In areas with mild climates, patio roofs are generally designed for loads of 30 psf (pounds per square foot) To make CULPEPER PRODIGY we start by using Culpeper Clear and add relief cuts that run the entire length of the underside of the board. This unique profile helps reduce cupping, warping and splitting making this Culpeper's Ultimate Deck Board. If you want real wood at a fraction of the cost of composite decking, choose Culpeper Prodigy - The Ultimate Deck Board

Fir & Larch T&G Roof Decking - YouTub

2x6 WC200 Douglas Fir T&G roof deck. Please for further details, 855-944-5247. 3x6 & 4x6 also available. Select Structural Grade per West Coast Lumber Inspection Bureau. 500SF minimum order For orders less than 500SF please call 855-944-524 UPDATED on December 15, 2017 with information on the U-factor alternative. A roof over a vented, unconditioned attic does not need to include any insulation. However, most cathedral ceilings and low-slope (flat) roofs are insulated roof assemblies: with this kind of roof, the insulation follows the slope of the roof. Insulated roof assemblies can be vented or unvented. There are lots of.

2x6 WC200 Douglas Fir T&G Roof Decking. View Product. Starting at: $7.45/ Square Foot. 2x6 WC200 Douglas Fir Tongue and Groove roof decking. Available in 3x6 & 4x6 (855-944-5247). 500SF minimum order For orders less than 500SF please call 855-944-5247 Deck Cedar Decks Pictures00022 Cedar Decks Pictures Ideas with regard to sizing 1024 X 768. Hidden Fasteners For 2x6 Cedar Decking - For the Big part, you are going to be pitching a Number of folks, and Your deck is merely likely to be looked at behind closed doors. Never overlook the deck has to synchronize with the house, in order to create a harmonious look In general terms, joists spaced 16 inches on center can span 1.5 times in feet their depth in inches. A 2×8 up to 12 feet; 2×10 to 15 feet and 2×12 to 18 feet. 2×6 joists should only be used on ground-level decks that do not require, and will not provide for, any guards. Subsequently, question is, Can you use 2×4 for shed floor Fir T&G Roof Decking - Forest Products Supply . 2x6 Fir & Larch Select Struc T&G Center Match . -Simple span of 6'-8' is easily achievable, but always check with local designs and load factors. -Priced comparably to other common roof decking species (Yellow Pine, SPF, etc)

2x6 Tongue And Groove Roof Decking Span • Decks Idea

The deck will only be attached to the house at one corner, for about 5'x5', the rest will be open for ventilation (the whole deck is about 400sf). Should I use 2x6 rim joists and cover them with 4/4x6 Ipe, or maybe use 2x6 Ipe lumber for the rim joists and eliminate the fascia boards? Will 2x6 rim joists look too thin AITC 112-93 - American Institute of Timber Construction This Standard applies to sawn tongue-and-groove decking only and does not apply to laminated, panelized or other special The standard size is 2 x 6 inch and 2 x 8 inch, nominal, dressed at the moisture Standard for Tongue~and~ Gr00ve Roof Decking, Al TC 112-93 3. 5%; Cedar, Northern White NELMA 15.1 15.2 LockDry® aluminum waterproof decking is a maintenance free deck product that creates a waterproof area under the deck. LockDry® is ideally used for roof decks, 2nd story decks and replacements to underdeck ceilings and composite decking

Our Kiln Dried 2x6 White Pine Tongue and Groove Decking is ready for installation once received on your jobsite. However, wood will shrink and swell with any changes in moisture content and weather. According to NeLMA, to minimize dimensional change after installation, install tongue and groove at a moisture content that matches with local. For the deck surface, you can use 2x4s, 2x6s, or 5/4x6s. The 5/4 decking (pronounced five-quarter), available in cedar and pressure-treated fir, is 1 inch thick and 5-1/2 inches wide with rounded edges that make for a splinter-free surface. Cedar 1x lumber usually has one rough side and one smooth side. Put the rough side down I am building adding a covered deck onto the back of my house. It will be 24' across and 16' deep. Rafters will be 2x6, roof pitch is 8/12. As mentioned, the span across the deck will be 24'.Corner post will be 8x8. I want to keep the area open so I only want to use a post on each corner if possible If you use 30 lb. felt paper strips on top of the joist it will help keep untreated joist from rotting, I've seen it done first hand on a deck demo job I did & was amazed at how well the yellow pine joist held up. I'm not sure what good it will do for the doug fir decking tho. Roll roofing laid over the entire frame would be a bad idea as John. In terms of fastener lengths, use 3-inch screws or 12d nails for 2 X 4 or 2 x 6 decking, and 2 1/2inch screws or 10d nails for 5/4 X 4 or % x 6 decking. The job will go quicker if you scatter boards for 10 to 15 rows of decking across the joists first. That way you will not have far to reach for a new board as you work

McEwen's McBlog

But, if you choose to use this system, you can use a 2x4 grid instead of a 2x6 grid or fill the 2x6 grid. The other drawback is that there will be a heat loss through the sleepers. Another system I have used with success, also in northern Vermont, is to first lay 6-mil plastic over the deck as a vapor retarder and air barrier (very important. used 2x6 Composite Decking, etc. $120 (spokane) pic hide this posting restore restore this posting. $1. favorite this post. Jun 21 I have the option of installing the new roof directly to the existing deck (or installing new decking if need be), OR installing 1x4 purlins 2 ft. o.c. onto the current decking, and then installing the new roof to those. Again, in both cases, I intend to use a radiant barrier

Building codes vary, but most require a railing on decks more than 24 inches above the ground. A railing height requirement of 36 inches is common. If you're using treated wood, make sure to use an end cut sealer on all the cuts to protect the exposed untreated wood. Railing posts can be attached. Wholesale Deck, Fence, & Railing Supply: 3 New Jersey Locations Marmora - Newfield - Hainesport: 609-644-2017This DIY deck is a gorgeous addition to Alexi Politis' backyard. Learn how to create deck designs and how to build a deck. or Best Offer. Lowcountry Paver Icons Key: Stock Product. Any use of any plan on this website is at your own risk 2x6 t&g roof deck - JLC-Online Forums. 2x6 t&g roof deck 11-03-2015, 05:31 PM. Upcoming job is an outdoor room with exposed beams/rafters. Looking at using 2x tongue and groove for decking. but need info on allowable spans, best practices, good suppliers, etc. .any suggestions? Tags: None. m beezo. Veteran Contributo I'm building a goat shed - total size is 16' x 24'. The tin roof (lean-to) will run the 16' length. Can I use a 2x6 for the rafters? Could go 16 or 24 OC. Thanks. Update from responses: roof is 1/8 pitch 8 ' off the ground near Houston (snow load is not a factor). Don't have goats yet

How to build a DIY decking cover | Permaculture magazine

wood - Which is better for deck flooring: 2x6 or 1x6 deck

Roof Deck Over Living Space Copper drip-edge Copper gutter, run to drywell 5/4 decking Tapered 2x6 sleepers with rubber pad glued to bottom 2x2 bal usters and 2x railing Existing framing Soffit 1/4 lauan 3/4 plywood EPDM membrane EPDM flashing strip 2x12 band joist 1x fascia Tapered 2x6 sleepers 1x4 decking EPDM membrane 1/4 lauan plywood 3. Versus 2x6 Boards Pros and Cons One of our site visitor wrote and asked: I have a porch I need to redo. The deck is currently built out of tongue and groove 2x6's and is rotting in areas. I feel it's because it is made of tongue and groove because the water can't flow off the deck as freely a stud wall and the 2x6 sill plate bolted to a concrete wall for floor structural attachment. Plenum Typically, the use of the entire floor truss cavity formed by the floor above and the ceiling below as a supply or return air duct. Plumb CutTop chord end cut to provide for vertical (plumb) installation to fascia (face trim board) If a sundeck surrounds the porch, the two structures will share a common floor frame. I use gapped 2x6 Trex decking for the outside portion. To back the seam where the Trex meets the T&G decking, we install 2x6 PT blocking on the flat between joists, flush with the top edge (Figure 2) center match roof decking - forest products supply. 2x6 fir and larch select struc t and g center match -priced comparably to other common roof decking species yellow pine spf etc tongue and groove installation on a timber frame home. info fastening: at each support two-inch decking shall be toenailed through the tongue and face nailed with one nail using 6

observatoryBenefits Tongue And Groove Wood Roof Decking – HOUSE

3. Floor joist MUST be minimum 2x8 joists if the deck is greater than 24 to walking surface. 4. Maximum cantilever of a floor joist is 24 5. If using hangers for joists the hangers need to have proper fasteners (no deck screws) proper fasteners are normally SD Screws, 10dx nails and 10d nails and proper 3 nails in all shear holes o Using corrugated metal also allows me to reduce the degree of slope, or roof pitch, needed to a mere 10 percent, or a 1-to-10 pitch. This meant the patio cover could start at the edge of the house's roof at a height of eight feet and slope down to seven feet, leaving a clearance of more than six and a half feet between the lowest part of the frame's headers and the ground at its outer edge

Specially formulated for use on Ipe and other exotic hardwood products, this finish is perfect for all the decking species that we offer. Ipe Oil ™ offers excellent UV protection that will keep your deck as beautiful as the day it was installed. 1 gallon covers approximately 300 square feet. Learn more about Ipe Oil ™ A roof also makes occasions usable when it rains. Anti Expansion Composite Decking Slippery Australia2x6 Composite within proportions 3264 X 1840. Make use of drywall and carpet as opposed to siding and decking.. If you put a roof over occasions, install moisture resistant drywall or flat siding about the home exterior wall and indoor. WCD 2 - Tongue and Groove Roof Decking. Timber tongue and groove decking is a specialty lumber product, constituting an important part of modern timber construction, that can be used for many applications to provide an all-wood appearance. Nominal three and four inch decking is especially well adapted for use with glued laminated arches and.

This deck is located right on the Henry's Fork of the Snake River, so the goal was to create something that anglers could easily identify as a trout, and we even got specific enough as to use various colors of decking plugs to give the fish spots. The combination of #timbertech Rustic Elm and Brown oak make for a great blend For many applications, a layer of plywood underneath your metal roofing is an unnecessary expense. Metal roofing panels rated for architectural use attached to purlins (horizontal pieces of wood or metal fastened to roofing trusses) are structurally sound when installed according to your roofing manufacturer's instructions and local building codes Aluminum Decking. Enjoy your outdoor living with LockDry® and NextDeck® aluminum decking from Nexan Building Products, Inc. Why struggle with scraping, staining, sealing or painting wood, composite or pvc decking? LockDry® and NextDeck® gives homeowners the freedom to enjoy their outdoor deck, rather than spending countless hours and money on deck maintenance and repairs This would be the bottom of any roof decking that is installed or the bottom of the metal roofing panels themselves if you install a product that does not require decking. Therefore, I would strongly suggest creating a vented chamber of at least 2 depth that allows for clear venting from the soffit (eave overhang) and then up and out of a. • Salvaged 2x6 tongue and groove roof decking was installed on a four foot center. All butt joints on. Tongue and Groove Roof Decking - WCD2 - American - Similar to Tongue and Groove Roof Decking - WCD2 - American The American Wood Council (AWC) is the wood products division of the American Forest

9. This document is not intended to preclude the use of other construction methods or materials not shown herein. DECKING Decking shall be wood 2x4, 2x6, five quarter board, or Wood-Plastic Composite sizes per the manufacturer's specifications. Wood decking shall be attached as shown in Figure 1. fasteners at 6 O.C New Cedar 54 Deck Boards Beside Old 2×6 Deck Boards Carport Roof inside size 1040 X 780. 2×6 Deck Boards - If you're all comfortable inside your favorite lounge chair, reading your latest novel with a cool beverage nearbythe aroma of your favorite BBQ drifting from your grill teases everyonecatching a few rays of sunshine never felt better 2×6 T&G-V Roof Decking. $ 3.48 - $ 4.83. *2x6 Southern Pine *#1 Select Face *1-7/16 Thick *5 Coverage *Mostly 12' and 16' *Commonly spans 4' or 6' *. 2×6 T&G-V Roof Decking. SKU: N/A Categories: Roof Decking, Southern Pine. *2×6 Southern Pine. *#1 Select Face. *1-7/16 Thick. *5 Coverage This 2 level deck features a 10' x 12' top deck completely covered by a decorative pergola. The following steps should be followed when building a roof deck. Most porch roofs use 2x6 or 2x8 rafters that form an upside down v across the ridge beam. A roof deck can provide a sanctuary for residents For a basic project in zip code 47474 with 120 square feet, the cost to Install Wood Decking starts at $11.68 - $15.43 per square foot*. Actual costs will depend on job size, conditions, and options. To estimate costs for your project: 1. Set Project Zip Code Enter the Zip Code for the location where labor is hired and materials purchased

Pergola Design - DoItYourselfCeiling Joists & Decking | TexAgsCantilevers in the 2015 Code | Professional Deck Builder

• Use recommended stainless steel screws in any areas near bodies of saltwater. • 2-3/4 or 3 screws can be used with Trex 2x6 product. • Muro T-Screw M-TX0300SEP listed above is approved for 2x6 decking (can also be used with standard 1 (decking as listed above). This screw is collated and can b The decking rafters could be extended up the roof, but would have had to be 3' higher than the peak of the garage roof! Again, not acceptable. Another option was to make a lean-to roof, covered in roll roofing. This would allow a lower pitch and keep the lowest point of the deck roof at least 7' high Our square edge boards install traditionally like wood - with deck screws. 2 x 6 boards available in 12', 16', and 20' lengths. 1 x 8 x 12' Fascia. Actual Dimensions. .56 in x 7.25 in x 12 ft (14 mm x 184 mm x 365 cm) Add a high-performance, luxurious finish to deck edges and stair risers-in all Transcend colors and Universal White In addition to being used in floors, decks and roofs, mass timber panels are now often used for the timber elevator and stair shafts in six-storey, light-wood frame residential mid-rise apartment buildings. NLT is created from dimensional lumber stacked on edge - 2x4, 2x6, 2x8, 2x10, or 2x12 at 1-1/2 on center - and fastened together with nails Tongue and Groove decking, commonly referred to as T&G decking or T&G porch flooring, works great for covered porches and 3 season rooms. Tongue and groove porch flooring is another beautiful screw-free decking material option for areas that are fully covered by a roof I am trying to insulate a house roof. I have beam construction with two, in tongue and groove decking. Metal roof on the decking. I want to remove the metal, build a 2x4 or 2x6 frame on the deck, blow the space with closed-cell foam, put OSB decking, and replace the metal. I need suggestions. Should I spray straight on wood