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Frequently Asked Questions
We’ve compiled answers to the most common questions about our products, application methods and best practices.
If you can’t find what you’re looking for, contact our expert team for advice.
Product Selection
When do I apply primer, and when do I apply sealer?
Here’s a simple way to decide: Got any colour left on the tiles after pressure washing? Go with Primer. Tiles completely bare? That’s a job for Sealer. And if those tiles are seriously rough and pitted, use our High Build Sealer to smooth things out.
What can happen if I skip the primer/sealer step?
Bad news – tiles with colour residue can powder, and without Primer to bind that powder, your topcoat won’t stick properly. It’ll likely peel off. For bare tiles, without Sealer, your first colour coat gets soaked up by the tile, leaving you with reduced gloss and less overall protection.
How many coats do i need for a proper job?
We recommend a three-coat system: one coat of Primer or Sealer, followed by two coats of your chosen colour. This builds up to about 0.2mm dry film thickness – the sweet spot for durability and appearance.
Can I mix different regent products together?
You can safely mix Tileguard® Colour and Sealer. But don’t mix Ultra or Primer with anything else – they’re formulated to work best on their own.
Can I thin the product with water?
We don’t recommend it. Adding water reduces the solid’s content and affects coverage. It can also destabilise the coating, leading to clogged spray equipment. Our products are ready to use straight from the pail.
Application & Technique
Can I save time by applying one thick coat instead of two thin ones?
Definitely not. One thick coat might seem like a time-saver, but it causes serious film formation problems and can lead to early failure. Thin coats dry properly all the way through, giving you much better durability and gloss.
What's the best temperature for applying your coatings?
Aim for between 14°C and 32°C air temperature. Too cold (below 14°C) and the coating can’t form a proper film. Too hot (above 32°C) and it might ’cook’ before properly forming a film. Either way, you’ll end up with poor durability and reduced gloss. Remember the golden rule: if the roof is too hot to touch, it’s too hot to paint!
How many coats can I apply in one day?
Technically, three coats are possible if conditions are perfect. But we recommend limiting to two coats per day for the best film formation. This is especially important in summer and winter when the time window for ideal application conditions is often narrow.
How long should I leave between coats?
Let each coat develop a dry, solid surface before recoating – about 2 hours in typical conditions. This gives the coating enough time to dry through properly before you hit it with another coat. Remember that temperature, humidity and tile condition can all affect drying time.
How much product do I need for my roof?
Here’s a quick calculation method: Take your house size in ’squares’, multiply by 10 to get square metres, then multiply by 1.3 to account for eaves, hips and valleys. For a 25-square house, that’s about 325 square metres of roof area. Then divide by your product’s coverage rate to get the number of pails needed.
Performance & Maintenance
Will adding a clear coat increase the gloss level?
Our colour coatings already have excellent gloss, but yes – tests show that an appropriate clear coat (like our Ultra Glaze) can extend gloss life and enhance the overall appearance, especially for high-visibility roofs.
Should I coat my terracotta tiles?
We no longer recommend or warrant coatings on terracotta tiles. The application conditions are far more critical than with cement tiles, and problems like adhesion failure and peeling are common. It’s better to leave terracotta tiles in their natural state.
How do I apply Tileguard® heatguard?
Follow the same application procedures as our standard Tileguard® products. The key difference is ensuring full opacity with both coats to maximise heat reflection. See our Technical Specifications for detailed application guidelines.
Who's covered by your warranty?
Our 10-year warranty applies to trade painters using our products according to specifications. We don’t warranty work done by untrained people.
Can I apply coating when the tile surface feels hot?
Absolutely not. If the roof is too hot to touch comfortably, it’s too hot to paint. High surface temperatures can ’cook’ the coating before it properly forms a film, severely reducing durability.
GOT MORE QUESTIONS?
Our technical team is ready to help with your specific project requirements. Give us a call or drop by one of our locations.