SX600 TREMSmooth NA Smoothing Underlayment

Product Spotlight: SX600 TREMSmooth NASmoothing Underlayment

Need a fast, reliable way to level subfloors without the usual prep headaches? SX600 TREMSmooth NA is designed to keep projects moving.

This protein-free, moisture-tolerant smoothing underlayment can be applied directly over most old adhesive residues, saving time on removal and preparation. Even better, there’s no need to prime when applying to a Tremco DPM making installation quicker and more efficient on site.

With a walk-on time of just 2 hours and the ability to receive floor coverings after only 4 hours, SX600 TREMSmooth NA helps you stay on schedule without compromising performance.

Ideal for interior applications, it’s also well suited to low-odour environments and can be used both under a DPM and over underfloor heating systems.

A great example of this in practice is the Crisis Skylight Refurbishment, where the ground floor was transformed into a multi-purpose community space. Faced with tight deadlines and residual adhesive from previous flooring, contractors used  SX600 TREMSmooth NA to level the subfloor quickly and efficiently without extensive preparation. Its rapid curing time allowed the installation to stay on schedule, helping deliver a durable, high-quality finish within a two-week programme.

Key benefits:

• Rapid turnaround on site – walkable in just 2 hours and ready to receive floor coverings after 4 hours, helping keep tight programmes on track
• Reduced preparation time – can be applied over most existing adhesive residues, minimising the need for mechanical removal and speeding up installation.
• No priming required over Tremco DPM – simplifies the process and reduces additional materials, saving both time and cost.
• Moisture tolerant formulation – suitable for use beneath DPM systems, offering flexibility across a range of subfloor conditions.
• Excellent flow and levelling properties – creates a smooth, even surface to support a high-quality finished floor.
• Low odour formulation -ideal for use in occupied buildings or sensitive environments where disruption needs to be kept to a minimum.
• Compatible with underfloor heating systems – performs reliably in modern flooring build-ups where thermal movement is a factor.

If you’re looking to speed up installs while maintaining a high-quality finish, SX600 TREMSmooth NA is built to deliver.