GRIZO — reflective insulation system
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Project · GRIZO Thermo+

GRIZO Thermo+ in an attic

Installing GRIZO Thermo+ reflective mat in the attic of a detached house — a continuous, sealed layer under the entire roof slope.

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Attic of a detached house in Bielsko-Biała lined with GRIZO Thermo+ reflective mat
BuildingDetached house, Bielsko-Biała
AssemblyRoof slope, knee walls, around the chimney
MaterialGRIZO Thermo+
01 / How it was done

How it was done

The project covered complete insulation of the attic in a detached house in Bielsko-Biała. The owner was looking for a solution that would improve thermal comfort in both winter and summer — without demolishing the existing roof structure.

The choice fell on GRIZO Thermo+ mat with glass-fibre-reinforced aluminium and three layers of bubble film. The mat was laid across the entire roof slope and on the knee walls, keeping the air gap the reflective layer needs to work.

We paid particular attention to the difficult areas: the corners at the gable walls, the chimney and the junctions between the mat and the masonry. Every joint was sealed with aluminium tape, so the whole surface forms a continuous vapour barrier.

The mat was fixed with staples every 20–25 cm along the rafters, with a 5–10 cm overlap on each successive strip. Installed this way, the reflective layer is guaranteed not to lose its seal as temperature and humidity change.

Result: an even, mirror-like surface ready for the frame and plasterboard. The owner gets a warmer home in winter, a noticeably cooler attic in summer and savings on heating in the seasons to come.

02 / Details

Details

Attic with a brick chimney surrounded by GRIZO Thermo+ mat
Attic with a brick chimney surrounded by GRIZO Thermo+ mat
Sealing the reflective mat in a corner at the knee wall
Sealing the reflective mat in a corner at the knee wall
Joint between GRIZO Thermo+ mat strips sealed with aluminium tape
Joint between GRIZO Thermo+ mat strips sealed with aluminium tape
Fixing GRIZO Thermo+ mat to the roof structure with an upholstery stapler
Fixing GRIZO Thermo+ mat to the roof structure with an upholstery stapler
03 / Installation details

Installation details

  • Staples every 20–25 cm along the rafters
  • 5–10 cm overlap on each strip
  • Sealing with aluminium tape
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Michał Kuchta

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Michał Kuchta

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