Typical Glass Roof Problems & Their Repair
Problems & Solutions
Q: Panels slipping down leaving a gap at the top through which water is entering.
A: Remove panel, reposition top gasket, replace panel and permanently secure.
Q: Panels too short or too narrow sliding out of the glazing bars leaving a gap through which water is entering.
A: Remove panels and install new ones of the correct size
Q: Cracked panel with unsightly staining or leaks.
A: Remove panels and install new.
Q: Leak under the glazing bar due to failed edge gasket or blocked self draining channel.
A: Remove panel, clean out self draining channels, install new gaskets. Replace original panel.
Q: Leak due to poorly fitted, or failed house or adjacent wall flashing.
A: Remove and replace lead flashing or use specialist HTG adhesive flashing to make repair.
Q: Leak below roofvent due to failed/poor mutin bar seal above or below.
A: Thoroughly Clean the area and fit specialist HTG adhesive flashing to bridge the problem area.
Q: Leak through the roof vent.
A: Check glazing seal. If gasketted replace with Sealant.
Alternatively fit new glazing sheet to the top of the vent with drip bars
Q: Leak at the Rose or Spider possibly down the cable of a light.
A: HTG adhesive flashing in white to form a seal around the finial/ upper rose and seal.
Q: Leak along the ridge.
A: Check integrity of the Crest for gaps Install Ridge flashing in white and seal as necessary.
Q: Leak at ridge possibly due to tracking of water along its length.
A: Check the integrity of the house interface flashing and repair as necessary.
Q: Leak below the valley gutter or at the window below the exit of the valley gutter.
A: Check gutter and downspout, for blockage. Does it have limited capacity or too much water from adjacent roofs causing overflowing? Clean out blockage; install new liner to increase capacity as necessary. Re-route water from adjacent roof away from conservatory roof.
Inspect the gutter for breaks and if found reline and seal.
Q: Leaks down the windows internally or externally.
A: Check if water is tracking under the glazing behind the gutter. If so install a drip bar to ensure that water flows directly into the gutter.
Q: Leaks to the outside of the windows.
A: Check the gutter seal and repair if necessary.
House wall interface
Q: Leaks down internal wall.
A: Check integrity of flashing. Replace or if possible repair.
Q: Internal leak due to the following:-
Q: Missing or inadequate external rebate for lid to close over.
A: Modify roof vent by fitting rebate.
Q: Missing or inadequate external rebate for the lid to close over.
A: Modify Roof vent by fitting rebate.
Q: Leaking top or bottomseal to the glazing.
A: Install specialist flashing above and/or below seal.