Browse Forums Pools & Spas Yeah mine about 9 metres long and 8 wide with slope of 25% at one point but the end point of the outlet is past the side of garage and if he concretes allowing for… 4 4669 DIY, Home Maintenance & Repair If the railhead is so poorly fixed it is also likely that the railhead is also non compliant, what about overflows and sealing railhead to the gutters?. 3 6128 |