Bathroom Skylight

The bathroom skylight had to be re-sealed after looking at the water ingress report for Jan 2008, the reading was slightly above normal.

Overview, bathroom skylight has the white lid.	Top elevated.	Working inside- remove the screws holding  the finishing trim.
The trim removed	Dropping the trim, there was a little water on it, on one side, this must account for the higher damp meter reading.	Noticed the side of the skylight, must be okay the trim came off it.
Working on top, ran a sharp blade under the skylight to break the seal.	Being very careful not to damage the roof, I took my time.	Worked on getting a corner started.
Once it starts to go, it becomes easier.	Almost removed.	The old mastic was mainly on the roof.
Just a matter of using a plastic scraper to remove the old mastic.	After that, used white spirit (makes it soft) to clean the last bits off.	Then methylated spirits to finish cleaning and de-grease.
All clean.	From inside, slight wood stain on one side, but the wood is sound.	The skylight cleaned with white spirit/meths and ready for the next step.
Ran a bead of Seamseal in the channel running around the base.	Next applied 19mm mastic strip, using outer edge as a guide, now ready to offer up.	Centred in the opening, then pulled firmly down.
Replace the inside trim.	Looking at the front,the finished result.	While I was up there, ran a bead of Seamseal on the front spoiler to the kitchen skylight.

Putting Seamseal then mastic on the skylight was just a belt and braces approach. Would have liked to replace the skylight with another Heki, but they do not do them smaller than 400mm x 400m.

Costings: Seamseal about £2.50, Mastic W4 19mm £5.25 both available from any dealer.

 Page Created 21st March 2008