If you have a project to renovate your converted attic, now is the perfect time to check out our latest double-layer insulation solutions. All ROCKWOOL stone wool solutions are natural and durable and have excellent health labeling (A + for the majority of them). Even after 55 years, they retain this performance and offer maximum comfort.
Depending on the site to be insulated, two possibilities exist:
- If the site has regular rafter gaps, ROCKWOOL offers the solution Rockcomble + Rockplus Premium ;
- If the job site has irregular rafter gaps, ROCKWOOL offers the solution Deltarock + Rockplus Premium.
Rockcomble is an ideal insulator for your renovation sites. It adapts perfectly to spaces between rafters without cutting in the first layer thanks to its flexible edge. Rockcomble offers excellent thermal (λ33) and acoustic performance. Pleasant to lay thanks to its flexible edge and soft to the touch.
Rockplus Premium offers you the best thermal performance in rock wool: λ32 and thus guarantees maximum summer comfort. It can be used in a single coat or as a second coat under rafters. Rockplus Premium is available in two finishes, coated or not with polyethylene kraft. Soft to the touch, it provides very good comfort when fitting.
Deltarock is an insulator specially designed for an irregular rafter center distance and is ideal for your renovation work. These triangular panels slide against each other and thus adapt to all the irregular spaces between rafters in the 1st layer. This saves time when installing the insulation while preventing falls. Easy to install and soft to the touch, Deltarock insulation offers excellent thermal (λ33) and acoustic performance.
ROCKWOOL advice
Estimated quantity (in unit or m²) for a 90 m² site, based on a thermal performance R = 6 m².K / W:
If it is with regular gaps between rafters:
2 pallets of Rockcomble and 3 pallets of Rockplus Premium.
The 1st layer of Rockcomble is either 60 mm or 80 mm, respectively R = 1.80 m².K / W and R = 2.40 m².K / W (between 41.39 m² / pallet and 59.13 m² / pallet depending on the width and thickness panel).
The 2nd layer in Rockplus Premium must allow to complete to obtain an R = 6 m².K / W or 140 mm R = 4.35 m².K / W and 120 mm R = 3,75 m².K / W (29.16m² / pallet ).
If it is with gaps between irregular rafters:
3 pallets of Rockplus Premium and 2 pallets of Deltarock.
The 1st layer is either 60 mm or 80 mm, respectively R = 1.80 m².K / W and R = 2.40 m².K / W (between 48,60 m² / pallet and 68,04 m² / pal, depending on the thickness panel).
The 2nd layer in Rockplus Premium must allow to complete to obtain an R = 6 m².K / W or 140 mm R = 4.35 m².K / W and 120 mm R = 3,75 m².K / W (29.16m² / pallet ).
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