PU Grouting/ PU Injection

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Polyurethane (PU) Grouting and Injection

What is PU Grouting or PU Injection?

PU grouting is a term used for a specific technique used to stop water seepage from cracks, to fill voids under slabs, concrete joints or walls that are caused by water damage. The procedure involves injection expanding polyurethane or PU into the space created by the water damage. This method is effective when used on the side of any water leakage area. For example, in an inter-floor ceiling leakage problem, a PU grout can be injected into the lower floor ceiling to prevent further water leakage.

How do we inject a PU grout?

A hole is drilled into the lower floor ceiling, and the PU grout is injected through this hole using either low and high pressure (depending on the type of ceiling structure). Once injected, the grout will expand to fill up the void or cracks caused by water damage.

What kind of PU grout is durable?

There are two kinds of PU grouts in the market – the open cell foam and the closed cell foam. Traditionally, the open cell foam is naturally more porous and is only useful as a temporary solution of a water leakage situation. To ensure a durable and lasting PU grouting, a closed cell foam is needed as the nature of a closed cell foam is sturdy and does not require a second treatment with resin.

LE FONG USES ONLY THE CLOSED CELL FOAM FOR ALL OUR PU GROUTING TREATMENT

INDUSTRY SPECIALIST IN PU GROUTING SERVICES

If you are looking for a specialist in PU Grouting, you are in the right place! We specialise in PU grouting for the following areas:

  • Seal joints in concrete, cement screed or masonry
  • Seal water-bearing cracks in concrete walls and ceilings
  • Repair of damaged false ceiling due to water leakage
  • Opening and resealing broken or damaged false ceiling due to water leakage

Why is PU grouting useful in sealing water-bearing cracks in concrete walls and ceilings?

In our hot and humid weather, cracks in concrete walls are common as the concrete walls are subjected to thermal movements and drying shrinkage. Some cracks happen because of nearby construction works or renovation works. Usually, such cracks are minor issues and do not present a problem at the onset. However, these cracks can be a major concern if they become a water seepage problem. Water damage in concrete walls can cause structural issues, especially that of structural integrity.

PU grouting is useful for water-bearing cracks as the closed cell foam that Le Fong uses will fully expand after injection to fill the void in the cracks. Once the foam fills up the void, the crack is covered efficiently, and the water seepage problem is stopped.

LE FONG PROVIDES COMPREHENSIVE PU GROUTING SERVICES

We are experts in PU grouting and make use of the latest technology to provide solutions for your water seepage problems. Only high-quality waterproofing materials are used to fill up gaps, voids and cracks in your concrete walls and ceilings to offer permanent solutions.

PROTECT YOUR PROPERTY AND PREVENT FURTHER WATER DAMAGE!

Call us today to prevent water damage or water leakage issues on your property. We offer an obligation-free waterproofing inspection on your property before we give you our professional recommendations based on our on-site inspection. All our materials are of high-quality and are recognised as the best in the industry.

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