Air Tight Attic Hatch

Yet i mean once the homeowners fire up a blower door and whip out their infrared camera the problems with attic hatches are pretty obvious.

Air tight attic hatch.

Installing an airtight attic hatch the right product and careful installation preserve the air barrier and save energy. Wellhofer airtight attic hatch. Why an airtight loft hatch the at35 metal loft hatch is the first air tight loft hatch of its kind. Attic ladders and hatches our insulated airtight attic ladders provide convenient access to an attic without compromising a building s thermal performance.

To achieve this the design creates an effective seal that has been tested against aging which is maintained by means of a pre stressed spring which. Having searched online for a simple design in the past i knew that there was literally not a single good article or resource on constructing a truly airtight attic hatch. Unique design features also make them easier to install more reliable and more attractive than traditional attic ladders. This one manufactured by battic door maintains the house s air barrier.

By eric whetzel june 6 2018. This hatch is designed specifically to meet the stringent demands new properties are subjected to ensure they are as airtight and well insulated as possible. The whole hatch is a thermal bridge with the situation at the junction with the ceiling a particularly weak point. Insulated to meet part l of the building regulations the at35 is airtight in both positive and negative air pressures at 50pa.

An attic hatch is usually located in a hallway or closet where the homeowners see it daily. The hatch is available in several versions depending on the. The image above shows an uninsulated airtight hatch and the impact on the loft insulation. An attic hatch can be a serious air leak.

Even though attic hatches can be huge air leaks and sources of radiant heat loss they are rarely fixed. A wellhöfer airtight insulated attic hatch can be fitted in the ceiling of an airtight newbuild or refurbishment retrofit to prevent heat loss through the roof space and eliminate air leaks. Certified airtight and pre insulated attic door from wellhofer. Airtightness products pricelist click here.

My favorite ones are the ones with an attached ladder they install the foam between the ladder the hatch. For advice on which airtightness product is best for your project please contact us on 01484 461705. Not only does this not work properly but you have just created an unsafe. We supply attic hatches that have been tested to stringent standards including passivhaus certification and offer the highest level of airtightness ensuring that your energy usage is not affected due to a poor fitting or draughty attic hatch.

Insulated attic hatch vs non insulated attic hatch thermal bridging analysis.