Retrofit for the Future

Commenced air tight membrane installation in utility area.

Attached membrane to dpm using bitumen tap. The membrane then folded down and first layer of 100mm pir insulation board put up against wall, hence further trapping the insulation at floor.

The fabric then was lifted up to the insulation board.

Membrane jointed as per manufacturer recommendation.

Internal corners neatly folded.

Second layer of 50mm insulation stood up in front of membrane. The membrane had to continue through ceiling and around joists into bathroom to maintain continuity. Membrane is neatly cut around individual joist ends and the sealing method used was similar to the sealing method used on the party wall.

Timber stud, constructed from 50mm x 50mm timber, is erected and installed in front of insulation and secured to floor and timber joists.

The skirt from the windows is jointed to the wall membrane using metallic tape.

The reveals were then sealed with flexi wrap tape to ensure 100% air-tight seal.

Because the reveals were very deep we decided to splay the reveals in order for more light to be allowed in. The timber stud will be made up to allow for this splay on the reveals.

We identified that an error had been made in not incorporating a continuity skirt from the pod to the rest of the house.

We attached ribbons of membrane to the best possible locations on the underside of the pod to the structure of the house. We had to accept that this would not be a perfect seal because we could not guarantee how well the metal structure was sealed on other metal sections.

This was further exacerbated by the fact that some services had to come through the air-tight membrane. Bitumen tape was used to seal as best we could.

Insulation was stuffed between the pod sides and gable end brickwork.