It is nice to deal with an honest, competent contractor. If you tried to make a perfect tight fit, the floor would either buckle, crack, or pull away from the wall. Continue scraping until all of the old caulk is removed. 10 Answers Sorted by: 30 Wood flooring is usually installed with a gap to the actual wall - this is important, because it allows for differences in expansion/contraction between the flooring and the materials used to frame the building. Be careful not to strip or chip the paint on the walls. Suspended timber floor with gap at wall and wood fibre board under joists In such cases a breathable woodfibre insulation such as Gutex Multitherm or Gutex Multiplex Top may be mechanically fastened to the underside of the floor joist (see Fig.3 and 4). If there’s any old or cracked caulk along the gap, take a utility knife or a putty knife and run the edge along it to scrape it off. If the gap is larger than 0.25 inches, press a foam backer rod into the gap, then fill. The contractor suggested to leave it be since it is not likely to get worse and the fix would be costly for little benefit. 1 Scrape off any old caulk from the gap, if necessary. If it is -inch (6 mm) or smaller, it can be filled with urethane caulk. The gap between the wall and the poured concrete floor is due to the dirt below the concrete settling. He said there was no need to do any work as nothing was really wrong.īTW, there is also a gap between an interior wall and a poured concrete floor in my foyer, but that is not below the gap on the second floor. His conclusion is that the gap between the second floor wall and floor is due to shrinkage of the wood, exacerbated by the heat duct running nearby. He went to the basement and checked for termite damage and found none. This type of caulk is waterproof and stays slightly flexible to withstand movement or settling of the floor. Smooth the surface of the caulk with a wet fingertip. Squeeze the tube to force the gap full of caulk. There was an uninsulated heat duct running between the joists. Cut the tip off the tube with a utility knife at a 45-degree angle to open a 1/4-inch hole. He cut through the subflooring in order to be able to look at the joists. There was a gap between the bottom of the sheet rock wall and the floor. Like countertops, those baseboard molding gaps. He took up some floorboards next to the gap. Thankfully, baseboard gaps with your floor can be easily sealed cleanly - with InstaTrim Flexible Trim Strips. Wall Base (AKA baseboard): Used to cover an expansion gap between a wall and a floor, and usually painted/stained the same color as the trim throughout the rest. I called in a competent contractor and here are his findings.
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