Flat Roof Leaks

First post in the series: Glass Fiber Flat Roof

Anyone who's followed my intermittent posts (sorry very busy with my consulting work and I’ve hurt my hip, so work ground to a slow crawl) will know we had our flat roofs replaced by a local company and then we had a few problems.

We eventually got things sorted, unfortunately among the flat roofs started initially to leak (or maybe more likely been leaking for ages, but took a bit to exhibit via a damaged ceiling).

We now have a large flat roof over a 2 story kitchen extension, the roof system involved replacing the roof boards (though with this roof we consented to let them overboard what looked like good quality OSB board) after which fiberglassing on the new wood. Fiberglass is used on boats, so in theory, should really be a lot better than a flat felt roof.

Not sure if poor quality work or poor design, but because the join amongst the flat roof, while the main building wasn’t sealed correctly water falling off a greater roof, was finding it is way into the property from two points!!

The company had added rendering strip regarding the existing wall to redirect water out of the joins, but underneath this rendering strip, water could splash into the opening amongst the roof plus the wall.

In 90% of properties, I guess this wouldn't be a problem, but we now have a dormer flat roof which water pours from when it rains in excess. The water drops 2 stories, so significant splashing is inevitable.

I fixed this by filling the gaps with mortar, but it really should not have happened.

Will need some photos as the above is difficult to explain.

Suffice to state we needed to remove another ceiling that got wet, one which the theory is that we didn't need certainly to remove, though glad we have since we found a previous roof replacement had left LOTS of the old roofing material including the stone chips in the plasterboard (the extra weight may cause the ceiling to fail, so better dealt with now)!!!!

---