Surface
Treatments.
Surface Preparation – Nationwide
Zinga Cold Galvanising
Zinga is a one-component cold applied galvanic zinc coating. Its unique formula provides environmentally safe cathodic protection to steel comparable with hot dip galvanising, with the added advantage that it can be applied, on site, like a paint.
These very large oil tanks in East Yorkshire (a set of 6 of them) were blasted free of rust, then galvanised with Zinga in 2008.
Priming and Painting
Primers and Topcoats can be applied to protect the steel from corrosion. While Zinga has its place, We now do favour moisture curing urethane products from Trident coatings for example. The Moisture Curing Urethanes work down to -15 degrees C and at high humidity. This allows on site painting to take place, outside in Winter!
Moisture Curing Urethanes are also much more tolerant to solvents in subsequent layers than Zinga is.
This was a complex web of metal in an ex Aircraft Hangar in Warwickshire which had suffered a significant fire. We cleaned and primed it with MCU Aluprime Spring 2009.
Silane Sealing
A typical reason for a house being painted is that the bricks or stone is porous, and the paint is there to keep the water out. Taking the paint off will not improve the water repellent properties of the brick or stone.
To restore these properties, we offer Silane sealing of surfaces. Photographs of buildings sealed with these chemicals look very dull, unlike traditional silicone products there is no noticeable colour change before or after application.
It should be noted however that we don’t push the sealing service – if you have a problem – there is a solution, but in 95% plus of cases we don’t cause the problem – and removing the paint doesn’t cause the problem (actually it can often cure the problem!). The handful of times we have sealed surfaces immediately after cleaning have been when access has been an issue, i.e. making use of the scaffolding makes sense – particularly if the scaffolding cost ten times more than the sealant (as happened with a job in Scarborough)