Vapour retarder/ Green Building & Sustainable Home Renovation Information & Advice

...Vapourretarderlatex primers: Firstly, the classification of a material as either an impermeable ‘vapourbarrier’ or a semi-permeable ‘vapourretarder’ is determined by how much watervapour在特定条件下通过物料。There arevapourretarderprimers on the market that exceed the requi...

...vapourretarderslowing any outward moisture migration while also allowing walls to dry inwards. You may hear that EPS is somewhat moisture permeable; this is true, but only slightly so and not enough to be a problem. According to Professor Straube, two inches of EPS has a perm rating in the range of 60-75 ng, or 1-1...

...vapourbarrier is determined by the amount of moisture that passes through it, and it is given a rating. Any material that allows less than 60NG (nanograms) of moisture to pass through under specific conditions, is considered a type 9 residentialvapour国家建筑规范的障碍。Including avapourcontro...

...vapourbarrier primer © Benjamin Moore Interior gypsum board: Latex paint ( orvapourretarderprimer ) is recomended as an interiorvapourcontrol layer below grade. It is most important to not include a polyethylenevapourbarrier or othervapourimpermeable materials that prevent walls from drying. 6 mil...

...retarderprimers - Resulting in better built housing more suited to our climate and lifestyle. To learn more about building science basics, watch the How to Frame a LEED Platinum Wall Assembly Video Guide on t he EcoHome YouTube Channel

...vapourdiffusion. These are two completely different things, with two completely separate solutions. Vapor diffusion is the process of moisture passing through breathable building materials, like drywall and insulation.Vapourbarriers are there to prevent that from happening. Air leakage is due to air pressure dif...

...vapours can be nausea, headaches, dizziness and fatigue. Read labels carefully and take the proper safety precautions. Wear gloves, eye protection and a proper respirator mask with cartridges rated forvapours. This is important - not all respirators are the same, some are specific to dust particles and won’t offer com...

...Vapourimpermeable 0.1 perms or lessVapoursemi-impermeable 1.0 perm or less and greater than 0.1 permsVapoursemi-permeable 10 perms or less and greater than 1.0 permsVapourpermeable Greater than 10 perms Understandingvapourpermeability: All we are talking about so far a...

...vapourbarrier. Notice the difference between the studs against the foundation and the studs that formed an interior division wall; thevapourbarrier did not protect the exterior wall from damage and mold growth. It caused the damage by prevented the wall from drying to the interior and instead sealed the moisture in....

...vapourbarriers: The job of avapourbarrier is to preventvapourdiffusion and the job of an air barrier is to stop air leakage through differences in air pressure between inside and out. A wall system should have onevapourbarrier, but can have many air barriers. Avapourbarrier can act as a very effective air ba...

What is a blower door test? Blower door tests are becoming part of many State and Provincial mandatory building codes - the new BC Energy Step Code in British Columbia, Canada is one example. A blower door test is often an essential part of a home audit, we don’t know for sure just yet if it will be part of the free...