October 3, 2018

3 common roofing installation problems that can be solved with Calder Lead accessories  

You may know Calder Lead for rolled lead sheet, but that’s not all they offer. They also have a full range of lead accessories designed with you in mind, to make your life easier and help you achieve the very highest standards in leadwork.

Here we highlight three common issues that can be resolved with Calder Lead accessories:


  1. Lead staining on roofing tiles and windows

One of the most common issues we come across is lead staining on roofing tiles and windows, which is both costly and time-consuming to clean. This happens because patination oil hasn’t been applied to the lead sheet.

The solution:

Apply Patination Oil as soon as possible at the end of the working day to prevent lead staining and preserve the appearance of the lead sheet for years to come. You should always pre-oil the reverse side of any flashing and allow to dry prior to fitting. Once fitted the face side can have a final coating to ensure a tip top appearance. Patination Oil is available in a variety of sizes so no matter how big or small the job is, it’s got you covered!


  1. Using lead wedges to fix lead flashing is time-consuming

Traditionally lead flashing has been fixed using spare lead squashed and formed into a wedge then inserted into the chase joint, and then pointed with mortar. This can take time and effort that can be better spent elsewhere.

The solution:

Calder Lead Flashing Clips are a great alternative to traditional lead wedges, they put far less pressure on the joint whilst maintaining a strong and reliable hold on the flashing itself. Calder Clips allow you to fix lead flashings up to 20 times faster than traditional methods, meaning you can fit in an extra cuppa and biscuit!


  1. Water penetration problems

Another issue we regularly come across is water penetration problems at abutments. The issue often occurs because traditional mortar is not a satisfactory long-term pointing where lead flashings turn into joints in brickwork or masonry. The mortar is unable to adhere to both the brick and the lead when subject to changes in temperature. It soon cracks, particularly in sunny exposures allowing the water to penetrate, causing dampness below.

The solution:

Sealant is far quicker and simpler than pointing with traditional mortar; all you need to do is place the sealant in a mastic gun and you’re ready to go. Calder Lead offer a Lead Sheet Sealant which is specifically designed for pointing joints between lead and brickwork or masonry. It provides a long term flexible joint, which can absorb temperature changes and avoids the problems of pointing with wet mortar. Job done!

Having the right accessories for the job is the key to a successful installation or repair. Remember when installing Calder Lead – oil it, clip it seal it!

At MKM we work closely with Calder Lead to offer you the best lead products at competitive prices. You can find the full range of Calder Lead rolled lead sheet and lead accessories at your local MKM branch. Pop in and speak to one of our roofing specialist for more information.