FAQs

Decking

Should I use a Decking Oil (natural finish), a Decking Oil (tinted with a transparent stain) or an opaque Decking Finish.

Decking Oils (natural finish) are designed to protect the timber without dramatically changing the colour. The oil enriches the timber to protect it from warping and cracking, ideal for use on hardwood timber. ECODEX and TIMBRE PLUS Decking are decking oils with relatively short drying times (recoat 6 hours), QUANTEC is a wood preservative that protects without colouring the wood. It reduces cracking, splitting, warping, checking and cupping and prevent mould and mildew on timber.

Decking Oil (tinted with a transparent stain), ECODEX and TIMBRE PLUS Decking may also be tinted to a range of semi transparent colours. This will change the colour of the timber without hiding the grain features of the timber. Transparent stains also provide added protection against UV rays.

An opaque decking finish (E.L. DECKCOAT) is suitable where a solid colour is required. This is good for use on older weathered decking or for decking where regular maintenance is not desirable e.g. holiday homes and rental properties.

When can I coat my new deck?

Traditionally timber should always be left to weather for 4-6 weeks before coating. This allows time for the tannins and oils in the timber to leach out. If the extractives aren’t removed from the timber it can result in a patchy appearance and will compromise the long term performance of the coating.

Fortunately the weathering process can skipped by using Quantum’s SAP-STRIP. SAP-STRIP is a non-toxic timber cleaner designed to remove tannins and extractives from all new timber (eliminates the long weathering process). SAP-STRIP also lifts the timber grain which helps the decking oil to deeply penetrate the timber.

What should I use to clean my deck before coating?

DEX PREP cleans grey, weathered (older than 12 months) and dirty timber in preparation for coating.

SAP-STRIP removes tannins, oils and extractives from new timber (under 12 months). It allows the weathering process to be skipped and stops the coating being contaminated by extractives that can cause drying problems and early adhesion failure.

Can I restore grey timber?

Yes, old timber where the surface has begun to deteriorate and collect dirt (greying) can be restored by removing the top surface layer of the timber. Use DEX PREP, an oxalic based timber brightener to clean the timber. If the timber shows signs of cracking it may be necessary to sand the surface.

Why does my deck feel tacky?

It is uncommon for oils to stay tacky for longer than a few days but there are some circumstances that can cause this:

  • Application in high humidity can prolong drying time.
  • Decking oil applied in a very thick film will increase drying time.
  • Dense timbers may cause the decking oil to take longer to dry.

If the deck still feels tacky after 7 days, wash down the deck with DEX-PREP. Clean with a high pressure cleaner to remove contaminates. Reapply decking coating.

Can I recoat a deck with decking oil (ECODEX or TIMBRE PLUS Decking) if it has been previously coated with an oil based coating?

Yes. Quantum products are designed to penetrate oil based coatings. Decking oils cannot be applied over water based products. Quantum products are designed to penetrate the timber and they cannot do this over an acyclic surface coating.

Before applying your new coating we recommend washing your deck with DEX-PREP.

What happens if it rains during or a short time after coating my deck?

Ideally a rain / dew free period of 48 hours is recommended after coating a deck, however this is not always possible. If it does rain you may see milkiness or white spots on the uncured coating, this is not permanent and will disappear as the coating cures.

The coating is milky or has white spots

This happens when the uncured water based coating comes into contact with moisture. These are not permanent and will disappear once the deck is fully cured (usually a few days of good weather).

Can I continue to coat my deck for years?

There comes a time when the deck will need to be sanded. When using Quantum coatings this will be after about 7 – 10 years, due to the build-up of old coating over time which can cause the coating to lose some of the transparency.  If using acrylics, sanding every few years may be necessary.

 

Exterior / Interior Coatings

Can I use a Quantum coating over an acrylic coating?

No, Quantum products are designed to penetrate the timber and they cannot do this over an acrylic surface coating. If you want to recoat a surface previously coated with an acrylic, you will have to sand off the previous coating.

What is a Transparent stain and what is it’s life span?

A transparent stain adds colour to a timber surface, whilst still showing the timber grain definition. Adding a transparent stain to a clear coating will extend its lifespan, however recoat time will depend upon penetration, application and most importantly exposure to UV rays. As a guide recoat time is between 3 to 5 years.

What is an Opaque stain and what is its life span?

Opaque stains result in a solid colour but still allow the timber profile to show through unlike an acrylic that sits on the surface. Opaque stains have a longer life span, typically 5 to 7 years. Horizontal surfaces such as decking may need to be recoated more frequently, a simple wash down and re-apply is required.

What is the difference between a penetrating oil and an acrylic?

All Quantum penetrating oils will oxidise at the end of their life span and just disappear, acrylics on the other hand will crack and peel and have to be removed before recoating.

What is the difference between TIMBRE PLUS Vertical and TIMBRE PLUS Decking?

TIMBRE PLUS Verticals has a Teflon wax in it that helps to aid beading and repel water. TIMBRE PLUS Decking on the other hand has a non-slip wax, like surfboard wax, that helps to prevent slipping.

What should I use to fill cracks and holes?

Linseed putty or exterior grade fillers.

Can I paint in the hot sun?

The ideal time to coat external timber is when the temperature is rising, so early morning is the best time to start.

How do I prevent lap marks?

Work along the length of the board, if the coating dries too quickly, finely mist the timber with water to slow the drying time.

 

Flooring

What is the difference between QTHANE and MICROFLOOR?

QTHANE is a solvent based, single pack, polyurethane floor coating that has good resistance to household chemicals and wear and tear, recoat time is 16 hours.

MICROFLOOR is a water based, single pack urethane coating that is low odour and fast drying (recoat 2 hours). MICROFLOOR is also available as MICROFLOOR Slip Resist 50 which provides a minimum D1 dry slip and P5 wet slip rating to comply with the requirements of AS.NZS 4586:2004 Slip Resistance classification of new pedestrian surface materials.

How do I prevent lap marks?

Lap marks are caused by uneven application and drying of the coating. It is important to choose the correct time of day to apply the coating, as application to hot surfaces will affect the drying. The addition of Quantum’s Wet Edge Extender into coatings will help to overcome the effects of heat and draught during application and drying.

Why are there bubbles in the surface coating?

Bubbling is caused by solvent entrapment, this can happen when air from the timber grain is trapped under the dry film, particularly likely when applying a coating onto a hot floor.  Adding Quantum’s Wet Edge Extender into the coating will slow the drying allowing the solvent to be released from the film before it dries. Bubbles can also appear in the film if the coating is over rolled on the floor as the coating becomes aerated, avoid over rolling the coating.