Halo has introduced a range of PVC-U clip-on cills to simplify the installation of external insulation to existing buildings. The cills are compatible with the company鈥檚 four doors and windows systems and are available in depths of 122mm, 192mm and 242mm. The firm says cill damage is a common defect, so fitting them at the end of the building process helps minimise snagging before handover.
Halo:

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