Flat Roofing Littlehampton

GRP Flat Roofing — What's Involved in Littlehampton

Survey and Deck Assessment

Every flat roofing job starts with an assessment of the existing deck — the plywood or OSB boarding beneath the current covering. If the deck is sound, we can overlay with GRP directly, reducing cost and disruption. If the deck has delaminated or rotted (common on coastal BN17 properties where moisture has been tracking under the felt for years), we strip back to the joists and relay new deck before applying GRP. We tell you which applies before you commit.

GRP Application in Littlehampton

In Littlehampton, we carry GRP materials for same-visit installation across the BN17 postcode. The Wick estate bungalows — including the streets running off Wick Street and Lyminster Road — are our highest-volume flat roofing area in Littlehampton. Many of the rear extensions on this estate were built with single-layer felt in the 1960s and are now 55–65 years old. GRP overlay is viable on properties where the deck has been kept dry; strip and relay where water has been tracking in.

Drainage and Upstands

Correct drainage fall is as important as the membrane itself. A GRP flat roof with inadequate fall will pond water — and standing water eventually finds its way through any system. We set a minimum 1:80 fall on all Littlehampton flat roofs and specify upstands of at least 150mm at all perimeter and abutment edges. On coastal BN17 properties, we increase upstand height to 200mm where direct spray exposure is a factor.