Need help with crack stitching helibars
Posted: Fri Jul 17, 2020 4:31 pm
Hi all. so I have had a vertical crack appear between front door and landing window. the crack follows the mortar, stepped up, roughly 8 brick courses(60 cm) high.
Had it looked at and it is not structural, so we're all good there.
So I bought a crack stitching kit online to avoid the crack reappearing and have all the necessary tools, but have a couple of questions.
Firstly, it is suggested to space the bars at 45 cm intervals. As the crack is only 60 cm, between a window and door frame, should i just put 1 at the top and one at the bottom, leaving 60 cm between bars. Or should I space them at 30 cm intervals, so 1 at the top, 1 in the middle and 1 at the bottom?
Also, I have read somewhere that it is suggested to rake out to 50mm at the top and bottom of the crack and insert 2 helibars, 1 on top of the other in the raked out mortar. Obviously fixed with the polyester resin compund.
Is this recommended, or would 1 helibar in each be enough, raked to a depth of 35mm?
Thanks all, hope this makes sense
Had it looked at and it is not structural, so we're all good there.
So I bought a crack stitching kit online to avoid the crack reappearing and have all the necessary tools, but have a couple of questions.
Firstly, it is suggested to space the bars at 45 cm intervals. As the crack is only 60 cm, between a window and door frame, should i just put 1 at the top and one at the bottom, leaving 60 cm between bars. Or should I space them at 30 cm intervals, so 1 at the top, 1 in the middle and 1 at the bottom?
Also, I have read somewhere that it is suggested to rake out to 50mm at the top and bottom of the crack and insert 2 helibars, 1 on top of the other in the raked out mortar. Obviously fixed with the polyester resin compund.
Is this recommended, or would 1 helibar in each be enough, raked to a depth of 35mm?
Thanks all, hope this makes sense