Spend $200 or More And Receive A FREE Fila Nopaint Star 1ltrs (Anti- Graffiti) | Free Shipping across NZ, Australia & Pacific for orders above $200 | BRANZ-Appraised Waterproofing & Tiling Systems – Technokolla, Fila Solutions & NAC | Spend $200 or more and receive a FREE Fila Nopaint Star 1ltrs (Anti- Graffiti)

Spend $200 or More And Receive A FREE Fila Nopaint Star 1ltrs (Anti- Graffiti) | Free Shipping across NZ, Australia & Pacific for orders above $200 | BRANZ-Appraised Waterproofing & Tiling Systems – Technokolla, Fila Solutions & NAC | Spend $200 or more and receive a FREE Fila Nopaint Star 1ltrs (Anti- Graffiti)

UNDERLAY - Ceramic tile underlay | 1800 x 900 x 6mm

UNDERLAY - Ceramic tile underlay | 1800 x 900 x 6mm

Key Features

Keeps Tiles Steady:
Stops flex from the timber floor pushing through to your tiles. Handy on older floors that move a bit when the weather changes.

Simple to Handle:
Light boards you can carry under one arm, score, and snap cleanly. No fancy tools needed, just the basics.

Decent Coverage:
At 1800 × 900 mm, each sheet covers a good area so you’re not stopping every few minutes to tape joins.

Built for Local Jobs:
Used right across NZ from coastal renos to dry inland builds. Works fine where you need a tidy base over wood.

Code Ready:
Meets NZ building code for tile substrate prep, so it’s good to go for site inspections and sign-offs.

Reliable Underfoot:
Gives a firm surface for tilework that’ll stay straight and sharp for years, no fuss.

Where to Use It

Timber Floors:
Best for bathrooms, kitchens, and laundries where the base is timber and you need a solid layer before tiling.

Renovations or New Builds:
Used in all sorts of jobs, from patching old villas in Auckland to new houses in Canterbury.

Light Commercial Spaces:
Good for small shops or offices where tiles cop steady foot traffic but the subfloor has a bit of give.

Mixed Climates:
Handles NZ’s damp air and seasonal shifts without swelling or softening, so it stays tight under the tiles.

How to use

Lay and Fix:
Set sheets in a staggered pattern over a dry, sound timber base. Fix with nails or screws at the right spacings.

Check the Base:
Make sure the timber’s dry and firm before you start. If it’s spongy or damp, sort that first.

Taping the Joins:
Tape the joins if you want extra stiffness before you spread tile adhesive.

Cut and Trim:
Score the sheets with a knife and snap them clean. Keep edges tidy and avoid chipping.

Compatible Surface

Plywood
Particleboard
Timber flooring
Tongue-and-groove wooden substrates (with correct prep)

Appearance

Looks like a smooth grey fibre-cement sheet, 1800 × 900 × 6 mm, ready for priming and tile adhesive.

Pro Tip

Leave a 3 mm gap around the edges of the room. Gives the board space to shift when the floor moves, and keeps the tiles from cracking later. Most folk skip this bit, then end up re-grouting.

If you’re not sure which tile underlay suits your floor, give the Surtec crew a bell. We’ll point you to the right one for your job.

Keeps Tiles Steady:
Stops flex from the timber floor pushing through to your tiles. Handy on older floors that move a bit when the weather changes.

Simple to Handle:
Light boards you can carry under one arm, score, and snap cleanly. No fancy tools needed, just the basics.

Decent Coverage:
At 1800 × 900 mm, each sheet covers a good area so you’re not stopping every few minutes to tape joins.

Built for Local Jobs:
Used right across NZ from coastal renos to dry inland builds. Works fine where you need a tidy base over wood.

Code Ready:
Meets NZ building code for tile substrate prep, so it’s good to go for site inspections and sign-offs.

Reliable Underfoot:
Gives a firm surface for tilework that’ll stay straight and sharp for years, no fuss.

Timber Floors:
Best for bathrooms, kitchens, and laundries where the base is timber and you need a solid layer before tiling.

Renovations or New Builds:
Used in all sorts of jobs, from patching old villas in Auckland to new houses in Canterbury.

Light Commercial Spaces:
Good for small shops or offices where tiles cop steady foot traffic but the subfloor has a bit of give.

Mixed Climates:
Handles NZ’s damp air and seasonal shifts without swelling or softening, so it stays tight under the tiles.

Lay and Fix:
Set sheets in a staggered pattern over a dry, sound timber base. Fix with nails or screws at the right spacings.

Check the Base:
Make sure the timber’s dry and firm before you start. If it’s spongy or damp, sort that first.

Taping the Joins:
Tape the joins if you want extra stiffness before you spread tile adhesive.

Cut and Trim:
Score the sheets with a knife and snap them clean. Keep edges tidy and avoid chipping.

Plywood
Particleboard
Timber flooring
Tongue-and-groove wooden substrates (with correct prep)

Looks like a smooth grey fibre-cement sheet, 1800 × 900 × 6 mm, ready for priming and tile adhesive.

Pro Tip

Leave a 3 mm gap around the edges of the room. Gives the board space to shift when the floor moves, and keeps the tiles from cracking later. Most folk skip this bit, then end up re-grouting.

If you’re not sure which tile underlay suits your floor, give the Surtec crew a bell. We’ll point you to the right one for your job.

Downloads

Frequently Asked Questions

1. Do I need underlay before tiling over timber floors?
Yeah, you do. Timber moves with humidity and temperature, and that can crack tiles fast. A solid fibre-cement tile underlay spreads the load and keeps everything steady.

2. Can I use this underlay in bathrooms?
Yep, in dry bathroom areas it’s fine. Just make sure you’re not laying it where it’ll cop constant water, that’s when you’d switch to a proper waterproofing system NZ first.

3. What’s the best way to cut the sheets?
Score the board with a sharp knife or fibre-cement cutter, then snap it clean. No need for power tools unless you’re trimming heaps, just wear a mask if you do.

4. How do I fix it down properly?
Lay the sheets staggered, then nail or screw them at the right spacings so they sit flat. Always check the timber base is dry and solid before you start, otherwise you’re wasting your time.

5. Can I tile straight over it after fixing?
Once the underlay’s down tight and joins are taped, yep, you can start trowelling your adhesive and setting tiles. Most tradies get moving straight away and finish the job same day.

Shipping and Return Policy

At Surtec, we aim to make your experience as seamless as possible. Orders are processed efficiently through our Auckland branches and distributed nationwide via our growing logistics network. For any queries about delivery times, product availability, or returning an item, feel free to get in touch with our team. We're here to help you keep your projects moving.

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