Often asked questions

No, but we recommend circular saw blades, suitable for “cement bonded boards”. Please ask your tooling specialist.

No. However we recommend wearing dust masks.

This back wall should never be allowed to reach a temperature in excess of 50°C. Therefore apply insulation boards. The applied thickness depends on the ambient temperature. Never fix the panels by screwing in the back wall! Important; check with a professional.

Building in your fire place; front and side panels; Promafour.

Fire protection of your chimney/channel (if applicable); Promafour, Promatect 100, Supalux EG.

Insulation of floor, wall or ceiling; Promasil 1000 or -1000L,

Insulation of your fire place or chimney segments; Promaglaf 1100 htk blankets.

In general yes, but it depends on local legislation. Use 12 mm Promafour, Promatect 100, or Supalux EG, depending on temperature!

This depends on the system you applied. Check with the manufacturer.

This depends on the fire place used. Check with the manufacturer.

No. this is not necessary, but can be done without a problem.

Use Alsiflex glue on top of the joints before assembly. After assembly and drying, sand down to a smooth surface.

Use Alsiflex glue on top of the joints before assembly. After assembly and drying, sand down to a smooth surface.

Cut strips of the same board, approximately 50-70 mm wide. Fix this to the wall etc. Then fix the board against these strips.

Regular plasterboard screws can be used.

In general this is not necessary but it depends on the type of screws used.

You can use either 12-, 15- or 18 mm. Tip; for your fire place, 15 mm is most widely used. For a more rigid construction you can choose 18 mm. In general for chimney’s 12 mm is sufficient. Higher thickness can be used too.

Cut strips of the same board. Take two layers and fix it firmly to the wall. Then, fix your board against these strips.

It depends on the ambient temperature. In general most of the time two layers of 30 mm Promasil can be applied. Make sure to overlap the seams. More important; consult a professional for your specific situation.