Masonry Cavity Walls
URSA Cavity Batts are suitable for both full and partial fill masonry cavity walls and carry BBA approval.
Fully filled cavity wall systems offer the most cost effective solution for a given U-value and can easily achieve current and proposed Building Regulation requirements.
Two grades of URSA Cavity Batt are available;
URSA Cavity Batt 35 - thermal conductivity 0.035 W/mK.
URSA Cavity Batt 32 - thermal conductivity 0.032 W/mK.
BBA Certificate 09/4624.
Rainwater penetration may be avoided by ensuring the correct use of lintels and cavity trays with appropriate stop ends.
Work undertaken by the BRE has identified the importance of good workmanship and the following points must be carefully considered;
With increasing levels of insulation it is vitally important to ensure continuity of the insulation around openings and at the junction of elements. Follow the guidelines in the Accredited Construction Details, Accredited Construction Details (Scotland), The Concrete Block Association and Constructive Details (for aircrete blocks).