1 / 8

Have Your Cavity Wall Ties Begun To Corrode_

For as long as they have been in use, cavity walls have presented a unique problem to builders, and while they are a vital addition to the design of modern households, in some instances, they can be weak. Damp-proofing a home and giving it the ability to be better insulated, cavity walls are useful, but problematic. But why?<br>

northwestwallties
Télécharger la présentation

Have Your Cavity Wall Ties Begun To Corrode_

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Have Your Cavity Wall Ties Begun To Corrode?

  2. For as long as they have been in use, cavity walls have presented a unique problem to builders, and while they are a vital addition to the design of modern households, in some instances, they can be weak. Damp-proofing a home and giving it the ability to be better insulated, cavity walls are useful, but problematic. But why? Cavity walls and wall ties The inner leaf of a property’s wall is supported from inside of the home by all of the walls and floors that are attached to it, but the outer wall generally stands alone, and unsupported. Without any additional support in the form of cavity wall ties, the outer part of a home’s wall could fall down in an extreme weather event, or following prolonged harsh weather conditions.

  3. Cavity wall ties are designed to stabilize the inner and outer leaf of a property’s structure, and make the entire structure more robust overall. Depending on the age of a property and the skill with which the wall ties were installed, however, some problems can commonly occur. Nowadays, wall ties are usually made from corrosion-resistant materials such as stainless steel, plastic or composite materials, while in days of old, they were made from materials that were far more likely to rust, and deteriorate.

  4. Cavity wall ties and corrosion When a substance wears away in its entirety, softens or dissolves, due to a chemical interaction between the environment and the metal, corrosion has taken place. One type of corrosion is known as rusting, and this particular reaction is caused when water, iron or steel interact together when oxygen is present. Although solid in form, the hydrated oxide that is rust, is still very weak and brittle. Older cavity wall ties made from corrosive materials will eventually succumb to this, while newer, stainless steel, galvanized wall ties will be far stronger and more resistant, for far longer.

  5. Which homes are more at risk from cavity wall tie failure? If your home was built between the years of 1935 and 1981, it has a higher chance of wall tie failure. This is mainly because houses built before that time didn’t have cavity walls, and also because older cavity wall ties simply weren’t durable enough and prematurely corroded. The British Standards Institute addressed the problem in 1981, by tripling the thickness of the wall ties zinc coating.

  6. What can speed up the rusting process? There are a number of factors that can accelerate the speed at which cavity wall ties rust or corrode, and they are as follows: Use of aggressive chemicals ● Sometimes added to mortar to colour it black, black ash is a byproduct of the coal mining industry, but its high content of sulphur, when wet, produces a weak sulphuric acid, which can go on to attack galvanised coatings

  7. Chloride salts ● If added to a mortar as an accelerant, chloride salts can speed up the process of corrosion, even in very small amounts High levels of moisture ● Whether the entire building, or certain sections or elevations of it are exposed to high levels of moisture, corrosion can occur at a faster rate. It’s common that the part of the wall tie in the outer leaf will experience the most rusting due to moisture penetration, but even condensation can cause wall ties to rust.

  8. Cavity wall ties have a tendency to rust, and if you’re concerned that your older home may be experiencing problems with aging ties, a thorough inspection from a local expert can help put your mind at rest, and if necessary, get the problem fixed NorthWest Wall Ties is a small family-run wall tie company based out of the heart of the Northwest. We specialize in offering cavity wall tie replacement and high-quality workmanship that is designed to last. We have been in business for over 20 years, and our experienced team of professionals has provided countless customers with reliable and affordable wall tie solutions. If you are looking for wall tie specialists, contact Northwest Wall Ties at 01942 933821 or email:northwestwallties@yahoo.com.

More Related