what thickness plywood over floorboards

Comments (0), Posted on 21 December 2010 at 02:35 PM in, Which floorboard thickness to select: when and why, How to financially prepare yourself for home renovation, Introduction Buying Guide for Quality Wooden Flooring, Buy one, get on free - lecol/leha maintenance products, Wooden Flooring Finish: oil or lacquer? Today most of those plants are out of business and most of the raw materials are less than 20 years old. 6629028) BA2 2PA. Additionally, if your floor has glue that's wearing out or you can just tell that this subfloor has seen better days, then you can always sand it down to remove bumps. Some experts suggest that 15/32-inch plywood should be standard if the underlying floor joists are spaced 16 inches apart or less, but slightly thicker 3/4-inch plywood should be used for joists spaced further apart. Treated Chipboard - it is made by bonding together wood particles (chips) with an adhesive under heat and pressure to form a rigid board with a relatively smooth surface. Mark the shape of the obstacle on the frayed paper and transfer this to your board. Use a. Well, I did promise a review after a year, so I am a little behind, but i’ve finally gotten around to taking some pics of the floor as it is now, 15 months after it was laid and since lived on. Ironically, the thicker plywood blocks can support lesser weights. The plywood must be exterior grade for all wet areas and it has to be installed in such a way that the joints between each layer do not line up, using what is known as a stagger pattern to keep the pieces from ever lining up. Click to see full answer Thereof, can you lay vinyl straight onto floorboards? The plywood board we used is only 5mm thick, which means that the difference in height between the hallway floor and bedroom floor is minimal. Ensure you stagger the joints, leaving an expansion gap between the edge of the board and the skirting. PS If tiling with stone tiles or on a floor with slightly more movement, you may wish to overboard with an even thicker plywood (18mm) and use decoupling matting on top. You don’t want to end up with a thin strip of wood where you’ll see it most. Traditionally plywood is the top choice – however, you’ll need to go for a thicker 12mm ply in order to ensure a rigid floor. When ordering either hardwood or plywood with the intention of leveling out your subfloor the size of the wood (as well as the thickness) should be considered. The standard dimensions are 1220mm x 2440mm or 4 ft by 8 ft. If you can imagine, over time the grooves from the wood planks and the gaps between the floorboards will show. As a general rule of thumb the larger the sheets of wood (whether hardwood or plywood) the better. Continue laying the first row of boards in the same fashion across the room. The minimum thickness allowed for ceramic tile installations is two sheets of 5/8-inch thick plywood. The thickness of plywood panels in a subfloor is regulated by the spacing of the joists. This involves screwing a sheet of plywood over the top of the existing floorboards / chipboard or plywood to provide extra rigidity and a flat surface onto which to tile. One solution if you see bumps in your current subfloor is to take plywood flooring (at least 1/2 inch thick) and place it over the existing planks to help smooth out these uneven patches. With so many different floor types to chose from, we know it can sometimes be rather a challenge to know which one to go for and which ones to avoid. Its strength is inversely proportional to the thickness. DIY PLYWOOD FLOORS: I love my house. | Measure the areas you need to fill and mark the dimensions onto the plywood. A subfloor will provide a smooth, level surface upon which to lay a floor covering. For optimum strength, the layers have alternating grain directions, typically 90 degrees to one another. Because the actual thickness may vary measuring the plywood is the only accurate way to determine its thickness. If you don’t respect this thickness of ply, then you’re highly likely to see rises and falls in your new flooring. For sheet vinyl to remain at it's best for as long as possible it needs to be laid over a smooth and solid surface. I would recommend a minimum of 22mm thick external WBP or marine ply.If your joists are widely spaced with few noggins (over 400mm apart) then I would recommend you use 25mm ply (if you can source it) as this will help to limit deflection. Plywood comes in 4-by-8-foot sheets with thicknesses ranging from 1/4 to 1 1/4 inches. Over 100 years old, it was made by craftsmen who really knew how to build things to last. However, you need to make the call as to the quality of the existing floor the level of imperfection you are willing to tolerate. What is the Actual Thickness of a Sheet of Plywood. Under British Standards BS 5385 Part 1, plywood has now been excluded as a suitable substrate material for the direct fixing of wall tiles, therefore when tiling on to walls, a tile backer board is required.However, tiling onto plywood floors is still acceptable under British Standards. Since then a load of people have been contacting me about the floor in our loft space and how it’s held up. If you are laying a subfloor over a large area, the larger the sheet the quicker you will cover the floor. Select a corner of the room from which to start that is as square as possible, but leave expansion gaps of 10mm-15mm (about 1/2in) between the edge of the board and the skirting. It is also a lightweight option, weighing about 70 … It comes in various thickness but for our comparison we will consider 18mm thick plywood. If the floor is reasonably flat, use 3.5mm. There was an addition (back bedroom and bathroom) put on when the house was refurbished shortly before Hur… This number is known as a span rating. Tiles, ideally, should be laid directly on to concrete, but if you wish to lay them over floorboards, use 12mm hardboard or plywood and fix it down firmly with screws every 300mm or so. It may be necessary to increase the thickness if heavy loads are anticipated or if the joists are spaced more widely than normal. There are two main materials you can use for your overboard; plywood or backer board – both easily accessible from most DIY stores. As far as the grove tongue and grove, you are to leave a 8th inch gap between the sheets, this is done with a 8d nail. Join an existing conversation or create a new thread related to Floors and stairs in our DIY forum. It is not a good idea to lay ceramic or stone tiles on suspended upper floors unless you are sure that the joists can carry the extra weight (consult a structural engineer for this). Mark the shape onto the board and then use a. Contact us | About us | Terms of useDIY | Building quotes, As fitting a plywood subfloor will involve hammering nails into the existing floorboards ensure the nails you use will not penetrate the underside of the floorboard and risk damaging underfloor pipes and cables, Measurements and advice when laying floors, Inspect the floor for any protruding nails or screws, punch or. Follow the finished floor covering manufacturer’s instructions. It is also available in different size sheets. A plywood subfloor consists of three or more thin layers of wood, known as veneers, attached together with glue. At this thickness, you can staple it down. The first, if the existing floor is not too uneven, is laying the new solid wood floor over the existing boards at a 90-degree angle. It's a classic New Orleans shotgun. 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