Cegidfa
Established Member
Hi folks,
Yet another milestone reached, the windows are finished (outside).
Because of the construction method, a cover had to be made to fit over the flashing and also cover the window setting mastic, and the superspacers (holding the DG apart).
We opted for 50 x 50 x 2mm PVCu. As we didn’t need 50mm down the sides, we used the trusty bandsaw to rip the sides down to 20mm - cleaning up the cut edge with sandpaper.
Now, how to join it together, it being so thin? Everbuild Mitrefast to the rescue. It was recommended by a chap at Boys and Boden, who used to make stairs - they used it to glue on the nosings...I think. It is essentially, cyanoacrylate with a spray. One part is sprayed, and the glue applied to the other....it works.
The mitres were cut on the ancient Nobex..fully manually :smile: another good bit of kit.
A large square of ply was fitted with a right angle of ..more strip ply; and away we went.
Slide the two mitres into the corner for the best fit, spray the plastic, we did both edges, reckoning that it was performing a similar function to solvent weld pipe cleaner; hold for ten seconds...voila - a joint. Err, apart from the fact that we had glued the angle to the ply. Well, it was for glueing wood. As Benny Hill once said in a sketch...PLAN AHE (when writing on a wall). Next joint achieved, but this time we used the plastic offcuts under the angle ...pulled out of the glue area of course
Having completed the four frames, it was felt that a small amount of support was needed, as the joint was good, but, any flexing would break it (we did some test runs with small parts and destruction tested them, in best engineering practice). Some white mastic was put in the corners and across the mitre. Just a smidge’, as we wanted the frames to lay as close to the window as poss. It seemed to help. See finished frames below.
Not wanting to form a water trap when fixing the frames, we ran mastic (clear silicone) round the inside part of the frame (i.e. adjacent to the glass). This would both hold the frame and form a water barrier at the edges. Any future leak would be able to run down under the frame and out to the roof, with warm weather drying off the inside. Well, that’s the theory.
See below a close up, and then the whole roof.
You may have noticed that the flashing looks gold in colour - it said 'grey' on the label.....hmmmm.
In the meantime, we have been trying to insulate the roof. I say try: it took us four hours to make a copy on a small piece of insulation, of that required to fit round all the parts that comprise a Gambrel roof. I will explain with pics in a future ‘episode’.
Another stage has also been reached, the scaff. can finally come down....hurrah.
Hi Kirk,
Thanks for the link.....and thinking of me. So when your mother in law tells you that something you want to make or do won't work, you take notice...right :smile:
Yet another milestone reached, the windows are finished (outside).
Because of the construction method, a cover had to be made to fit over the flashing and also cover the window setting mastic, and the superspacers (holding the DG apart).
We opted for 50 x 50 x 2mm PVCu. As we didn’t need 50mm down the sides, we used the trusty bandsaw to rip the sides down to 20mm - cleaning up the cut edge with sandpaper.
Now, how to join it together, it being so thin? Everbuild Mitrefast to the rescue. It was recommended by a chap at Boys and Boden, who used to make stairs - they used it to glue on the nosings...I think. It is essentially, cyanoacrylate with a spray. One part is sprayed, and the glue applied to the other....it works.
The mitres were cut on the ancient Nobex..fully manually :smile: another good bit of kit.
A large square of ply was fitted with a right angle of ..more strip ply; and away we went.
Slide the two mitres into the corner for the best fit, spray the plastic, we did both edges, reckoning that it was performing a similar function to solvent weld pipe cleaner; hold for ten seconds...voila - a joint. Err, apart from the fact that we had glued the angle to the ply. Well, it was for glueing wood. As Benny Hill once said in a sketch...PLAN AHE (when writing on a wall). Next joint achieved, but this time we used the plastic offcuts under the angle ...pulled out of the glue area of course
Having completed the four frames, it was felt that a small amount of support was needed, as the joint was good, but, any flexing would break it (we did some test runs with small parts and destruction tested them, in best engineering practice). Some white mastic was put in the corners and across the mitre. Just a smidge’, as we wanted the frames to lay as close to the window as poss. It seemed to help. See finished frames below.
Not wanting to form a water trap when fixing the frames, we ran mastic (clear silicone) round the inside part of the frame (i.e. adjacent to the glass). This would both hold the frame and form a water barrier at the edges. Any future leak would be able to run down under the frame and out to the roof, with warm weather drying off the inside. Well, that’s the theory.
See below a close up, and then the whole roof.
You may have noticed that the flashing looks gold in colour - it said 'grey' on the label.....hmmmm.
In the meantime, we have been trying to insulate the roof. I say try: it took us four hours to make a copy on a small piece of insulation, of that required to fit round all the parts that comprise a Gambrel roof. I will explain with pics in a future ‘episode’.
Another stage has also been reached, the scaff. can finally come down....hurrah.
Hi Kirk,
Thanks for the link.....and thinking of me. So when your mother in law tells you that something you want to make or do won't work, you take notice...right :smile: