My 1922 duplex needs blown insolation, caulking, new windows/doors. The bsmt. is unhealthy - needs insulation & ventilation.

Wendy Lloyd-Smith 8 octobre 2011Mise à jour: 27 avril 2021

My 1922 duplex (35% energy efficient) needs blown insolation, caulking, new windows/doors. Bsmt. unhealthy - needs insulation & ventilation. Pls. advise who I should go to for good work/fair price. An eco energy analysis finds my duplex to be 35% efficient, There are 22 windows, 5 doors to replace. I have the energy rating system which is helpful, but I find many windows have such wide frames- too much light is blocked. Please refer me to a company you respect which is not too expensive. Please refer me to a company that does blown isolation - if that is what you recommend ?? Do they also usually do caulking>? I need to understand how to treat my musty basement (one little room under the cement front porch has a mould problem). The bsmt. has 2 long narrow portions, one of which has windows and a little studio apt, which is not fit to live in. Solarcan has a ventilation system which they are promoting - circulR - a new ventilation unit they say people rave about. I am interested in making this basement as healthy as possible. Please advise. I need to be very careful in my spending. Thank you, Wendy

Réponses (5)

Wendy Lloyd-Smith 18 octobre 2011 12:07

Thank you for your advice - I was particularly interested in the blown insulation information - I am told it is hard to spray urethane products into the walls and so I would be using the cellulose made from re-cycled newspapers.

I know that other chemicals are added to this, but I wonder about having a paper-based product in my walls when I have been told to keep paper out of my basement because of the dampness and mold.

Please comment on the effectiveness of this product and what you think are the health issues.

Thank you!

Écohabitation 18 octobre 2011 16:29

Cellulose insulation is typically treated with borate, a non-toxic substance which inhibits the growth of mould as well as contributing to the product's excellent fire safety rating. The only health concern relates to the installation process, which releases some airborne particles that can get into airways if adequate protection isn't worn. Regarding resistance to humidity : If you're insulating walls in a room or area where high humidity is an issue, such as the basement's foudation walls, you should consider using materials that are very resistant to decay, such as rockwool insulation and galvanized steel studs. Otherwise, cellulose insulation is a competitive and very ecological option.

Wendy Lloyd-Smith 19 octobre 2011 14:29

Thank you for that useful information.
I am looking at cellulose for the attic and upper duplex exterior walls.
The basement and lower duplex kitchen will be urethane as I will be taking off wall surfaces.

Please could you tell me what you know about insulating paint.

It sounds as though it may be very effective and simple for me to do myself - and it could become routine for exterior walls, I would think.

Do you know if it is safe, recommended?? I am looking at the interior paint, but I know that exterior paints are also available.

Écohabitation 19 octobre 2011 14:36

@Wendy Lloyd-Smith Insulating paint is an ineffective product whose claims are entirely fabricated. Please read this precautionary tale before even considering purchasing this product http://www.greenbuildingadvisor.com/blogs/dept/musings/insulating-paint-salesman-tripped-his-own-product