Q: We recently purchased a property that has an old detached garage on it. Water is leaking into the garage all around the perimeter at the bottom of the wall (first photo). The garage is slab-on-grade construction with a 12-in.-high concrete stem wall placed on top of the slab. The problem is that the slab extends 6 in. beyond the stem wall, forming a horizontal skirt around … [Read more...] about How To Stop Leak Onto Garage Floor?
Q: I have a damp spot in the corner of the bedroom. It is and outside wall corner. It is a bungalow so no bathroom over it. The damp spot seems to dry at times but there are tiny mold spots on it. Could it be that there is not enough circulation in the room? The window in the room becomes full of condensation when blind is down in winter so thought that may be part of … [Read more...] about Preventing Mold On Bedroom Walls & Ceilings
Q: A plumber disconnected service from our old well and connected the house to city water. The well was never capped. Could that be the source of our leak under the slab on grade? -- Thomas A: Capping of an old well keeps debris and surface contaminants out of the well in case you want to use it in the future. But a cap would not affect underground leakage. Unless you have … [Read more...] about How To Find An Underground Water Leak
Q: I’m currently dealing with insulating a cathedral ceiling, which has become a major issue. I’ve been researching solutions but feel stuck in figuring out what’s the best way to go about dealing with the problem. I have a shed roof with 2:12 pitch, built with 2x8 roof joists. It’s a mobile home that’s 14x76, so the roof is just one continuous slope. I live in northern … [Read more...] about How to Prevent Condensation in Cathedral Ceiling?
Q: What is the cause and cure for wood rot in an exterior wall? I recently noticed that the corner of my house has rotting studs from the bottom up. The exterior sheathing is rotting as well. This area was never with siding due to being approximately 6 inches from a garage wall. What is the best way to repair the wall and to prevent future problems? The house was built eight … [Read more...] about How To Diagnose & Repair Rotted Framing?
Q: How do I identify the source of a water stain on the ceiling? I’m not sure if a leak is from the bathroom directly above or from something else. Also, once identified, how do I go about fixing the leak? – A.G. A: Finding the source of a leak in a ceiling often involves a bit of detective work. Like a detective, you start with the most likely suspect. If you can rule out … [Read more...] about What Caused Water Stains on Ceiling?
Q: Magnesium-oxide board (ExtremeGreen board) seems to be a ideal building material, but Wikipedia and other sources say it has a problem of attracting condensation due to its salt content. Can you offer any advice? -- Keith B. A: Magnesium-oxide building products – sheathing, wallboard, siding, and other products such as SIPs – are very new in the U.S. so there is little … [Read more...] about Magnesium-Oxide Wallboard & Sheathing
Pierre writes: My basement wall is insulated with a 2 inches of Styrofoam on the interior and I built a 2×4 wall and added Roxul insulation. I planned to install vapor barrier on top. Is it OK to add this vapor barrier? It is for a bathroom with a tiled shower. I live in central Ontario, Canada. Steve Bliss, of BuildingAdvisor.com, writes: The short answer is: Don’t use a … [Read more...] about Basement Vapor Barriers