Hartlepool Logistics Deck Waterproofing
The logistics platform of a commercial centre in Hartlepool was decked with Impermax.
Overview
The logistics platform of a commercial centre in Hartlepool was decked with Impermax.
| Place | Hartlepool, United Kingdom |
|---|---|
| Work | Decking of a logistics platform |
| Membrane | Impermax |
Challenge
A logistics platform is a working deck. It takes point loads from wheels and the water those wheels drag in. A film that is only complete in the middle will fail at the turn into the drain, which is where the deck sends everything. Hartlepool’s weather does not give that drain a dry season.
The membrane is Impermax, and the duty is the deck of that platform. Every wheel track ends at a drain, so the drain is part of the coat.
Solution
Impermax is Krypton Chemical’s cold-applied liquid polyurethane membrane. It goes on by roller, brush, spreader or airless equipment, in two coats of about 1 kg per square metre each. The coats are different colours, so a missed patch shows while the work is still open. A spiked roller is run while the coat is wet, to break bubbles before they set. A mesh is not required across the field. It is used at edges and corners, the places a liquid film is asked to turn.
Elongation is 450 to 600 percent and tensile strength is 2.5 to 4.3 MPa. Those figures are typical product data, measured on the product under stated conditions. They are not a cut taken from this job. On a surface that moves with heat, that elongation is why the film can stay with the substrate instead of cracking where the plane changes.
The substrate wants to be between 5 and 40 degrees C. Above 45 degrees C the work needs extra measures. Pot life is about 4 to 6 hours for 1 kg at 20 degrees C and 50 percent relative humidity. People can usually walk the film in one or two days. It reaches about 90 percent of its properties in three days. Final hardness takes 10 to 15 days, and standing water should wait for that. The European Technical Assessment is 06/0263, with CE marking for the 10-year and 25-year working-life categories. The system also carries a BBA agrément.
Two full coats, about 1 kg per square metre each, give a build that can be checked by colour before wheels go on it. On a deck that will be loaded, that check is cheaper than opening the ceiling later. The film still needs its 10 to 15 days to final hardness before it is asked to live under traffic and standing water together.
Application
Stir the pail slowly so settled solids come back and bubbles can leave. Do not thin it with a solvent that is not the Rayston PU solvent. The surface is cleaned, cracks and weak spots are dealt with first, then the two coats go down, including upstands and outlets in the same passes. Details are not left for a leftover tin at the end of the day.
On this job the same rule applies at every edge. trolleys, pallets and rain all use the same surface, and the space under it has to stay dry. A holiday in the second coat is a path. The colour change is how that path is seen before the surface is handed back. Outlets, upstands and fixings take the same two coats as the field, because water does not fail in the middle of a bay. It fails where the plane changes.
Results
The Hartlepool logistics platform carries an Impermax deck membrane, turned into the drains and up the edges in the same work.
Products
Impermax
Cold-applied liquid polyurethane. Two coats at about 1 kg per square metre each. Elongation 450 to 600 percent. Those figures are typical product data.
FAQ
How is Impermax applied?
By roller, brush, spreader or airless equipment, in two coats of about 1 kg per square metre each. The coats are different colours so a holiday shows. On this deck that matters because trolleys, pallets and rain all use the same surface, and the space under it has to stay dry.
How long before the film can be walked?
Usually one or two days. About 90 percent of the properties are there in three days. Final hardness takes 10 to 15 days, and standing water should wait for that. On this deck a film that is walked or flooded early is still soft.
What temperature does the substrate need?
Between 5 and 40 degrees C. Above 45 degrees C the work needs extra measures. A surface in full sun can pass that even when the air feels moderate, and this deck is no exception.
What do the strength figures mean here?
Elongation is 450 to 600 percent and tensile strength is 2.5 to 4.3 MPa. Those are typical product data, not a test cut from this job. They are why the film can follow movement at upstands and outlets on this deck.
Where do the cure times come from?
From the Impermax technical data sheet, measured on the product under stated conditions. They are not a stopwatch reading from this deck. The ETA for the system is 06/0263.