Safe-R Close-R

Unilin’s range of fully insulated cavity closers are a solution for builders and specifiers for the closing of cavities around window and door openings, preventing cold bridging, damp penetration, air infiltration and condensation.

The Safe-R Close-R range is used to close cavities and is suited to all types of windows and doors and is available in sizes to fit cavity widths from 100mm – 150mm.

High‑performance PIR or phenolic insulation can be used to create an insulated system with low thermal conductivity, delivering excellent thermal performance and effective detailing

Phenolic Insulation works by reducing the transfer of heat through a building’s wall, roof, floors and other structural components.

The lower the thermal conductivity in the phenolic insulation, the higher it’s insulating capacity.

As it has a low thermal conductivity it is difficult for heat to pass through it, which makes it is such a good insulator.

Unilin Insulation also offers a Safe-R, Close-R insulation solution that places strong emphasis on fire performancewithin the Cavity closer.

R-value

A low lambda value(Thermal conductivity) results in a high R-value or thermal resistance, a measure by which we assess specific insulation products in relation to their insulation thickness. This thermal resistance quantifies the area and temperature difference needed to transfer 1W of heat energy. The higher the R-value, the lower the amount of heat loss.

Phenolic Insulation and Reaction to Fire

The Safe‑R Close‑R is a fire‑rated cavity closer, making it a strong option if fire performance is a key priority for your project. Safe‑R is a phenolic insulation material with a Euroclass C‑s1,d0 fire classification. The combined Safe‑R phenolic core and stone wool layer have been tested in accordance with EN 1363‑1:2020 and EN 1366‑4:2021.

Using Safe-R Close-R in your project can help to achieve:

• In excess of4 hour fire resistance in a 150mm cavity when tested to EN 1366-4:2021
• Template for wall tie placement
• Continuity of insulation
• Suitablility for door, window, eaves openings
• Suitablility for use at expansion joints
• PSI values reaching Passive Thermal Bridging standards