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Installing Drywall

<-- video list on the left

Drywall is a relatively easy DIY job -- but installing drywall with little dust and no visible joints is another question.  The index on the left is loaded with generalized and summary information in each section, and very detailed specific videos for each unique aspect of working with drywall.  As well each video has its own section for your comments on the bottom.  I ask you to try and put your comments in the section where they relate to the specific topic as this will help people to find the information and comments they are looking for.

 

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Jon on September 27, 2010 20:56

Hello Hector.


For the drywall question -- foam insulation panels must always be covered by something that has a 20 minute fire rating.  Ordinary 1/2" drywall satisfies this requirement and that is why we usually cover this insulation with drywall.  Other materials could be used if they have a documented 20 minute fire rating.  These coverings could be glued to the foam, but in addition the code requires that they be mechanically fastened, so that if it gets hot, the glue won't just let go and expose the foam.


You could put up the drywall with long screws through the foam into the wall studs, or you could put strapping on the wall, screwed to the studs then the drywall screwed easily to the strapping.  Dow actually makes a product called WallMate that has a grove for such strapping.


Technically you should put a vapour barrier on the warm-in-winter side of the insulation, but in reality the extruded polystyrene panels (not beadboard) is good enough. 


Follow this link for a lot of information about your basement floor.


 

Hector Egiziano on September 12, 2010 15:48

Hi, Jan
My name is Hector , I live in Montreal, and this last June we've bought this house; a bungalow.
The basement is not finished. They just put up 2" styrofoam on all 4 walls and painted them.The inspector that saw the house said it is a fire hazard. Questions:
1. Is it a fire hazard?
2.The styrofoam is screwed onto the walls, do I remove it or do a finished wall with gyprock etc. over it. By the way the cement is paintedunder it.Ther's novapor barrier(plastic) between the cement and the styrofoam.
Also I would like to finish the floor. On it they have glued vinyl sheets directly on the cement.
I would like to up a floating wood floor. Do I remove the vinyl or put up the floor over it?
Looking forward for your advice.
Best regards
Hector

Jon Eakes on April 30, 2010 14:17

Hello CR
May I encourage you to look at the video list on the left. Under Gypsum Panels / Tubs and Showers I actually deal with this question in a video.

1) yes there should be insulation in or on any exterior wall, but insulation is not necessary on an inside wall as there is a warm room on the other side - although it could give you some sound proofing.

2) For shower and tub tiles on outside walls with insulation, the tile assembly is considered a vapour barrier, although not a perfect one. Few people have noticed but the building code actually forbids a vapour barrier here. With a vapour barrier, the drywall would collect moisture, sandwiched between two vapor barriers.

For the best of the installations you could actually use the new Kerdi membrane over ordinary drywall: visit www.SchluterHouse.com and click on the bathroom.

Jon

CR on April 30, 2010 05:19

We are currently renovating a room in the basement to become the Master Bedroom. A so called, "expert" installed GREEN drywall sheets with NO insulation behind or vapor barrier! We've halted the renovations at the moment. I've had a 2nd opinion come in and taken a look and he agrees with use that there should be insulation and a vapor barrier.

Question: Should there be insulation on 2 exterior brick walls and the 1 interior brick wall?

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