Comfort walls

The Kerkstoel Comfort Wall is the solution if there are high thermal and acoustic demands. This is an ideal solution for party walls between apartments and office buildings, in cellars, as a façade component or as an insulated internal wall.

The Kerkstoel Comfort Wall is a semi-finished product, consisting of two reinforced concrete shells. These shells are attached to each other by specially developed rustproof connectors made from high-quality insulation materials, thus preventing the formation of thermal bridges.

The insulation layer is pre-applied in our factory to one of the shells on the inside of the cavity wall. Depending on the ultimate application of the precast wall, there may be an inter-space that is filled up with concrete at the work-site.

The Kerkstoel Comfort Wall is the result of innovative research and testing conducted by Kerkstoel 2000+ in collaboration with the WTCB (Scientific and Technical Centre for the Building Industry) research institute.

Technical specifications

Comfort Walls are therefore a perfect solution for satisfying the legislation on requirements for energy-saving performance and indoor climate (EPB). Insulated double precast walls attain every desired and required U-value, depending on the thickness of the layer of insulation, which is a minimum 3 cm.

Therefore they combine the advantages of solid concrete construction - where the importance of acoustic performance is well-known - and thermal resistance in a single shell construction component.

PIR 0,022 \| U-value wall (W/m²K)
Thickness insulation (cm)	*Total thickness wall (cm)**
	30	36	40	45	50
4	0,464	0,454	0,448	0,440	0,433
6	0,328	0,323	0,320	0,316	0,312
8		0,251	0,249	0,246	0,244
10		0,205	0,204	0,202	0,200
12		0,173	0,172	0,171	0,170
14			0,149	0,148	0,148
16			0,132	0,131	0,130
18				0,117	0,117
20				0,106	0,106
* other wall thicknesses on request

Hard Rockwool 0,040 \| U-value wall (W/m²K)
Thickness insulation (cm)	*Total thickness wall (cm)**
	30	36	40	45	50
4	0,748	0,723	0,707	0,688	0,671
6	0,549	0,535	0,527	0,516	0,506
8		0,425	0,420	0,413	0,406
10		0,352	0,349	0,344	0,340
12		0,301	0,298	0,295	0,292
14			0,261	0,258	0,255
16			0,231	0,229	0,227
18				0,206	0,205
20				0,188	0,186
*other wall thicknesses on request

Advantages of Comfort walls

Insulation pre-installed in our factory
Faster and cleaner working at the construction site
Less labour-intensive
Every wall thickness possible: from 250 mm to 500 mm
Corrosion-resistant
Both outer surfaces made of smooth industrial facing concrete, suitable for spray primer
Fulfils the acoustic requirements for heavy solid constructions
You can easily meet the requirements for greater acoustic comfort in combination with a floating screed
You can comply with all the requirements as regards stability and thermal and acoustic performance with one single shell construction component
No thermal bridges
Economical
Easy to install
Less finishing work required thanks to two smooth surfaces
Slimmer construction