Renewable Heating Hub Heat Pump Forums

Search with Wattson
Forums
Sustainable Sidetra...
DIY
Decking varnish rec...
 
Notifications
Clear all

Joining the Renewable Heating Hub forums is completely free and only takes a minute. By registering you’ll be able to ask questions, join discussions, follow topics you’re interested in, bookmark useful threads and receive notifications when someone replies. Non-registered members also do not have access to our AI features. When choosing your username, please note that it cannot be changed later, so we recommend avoiding brand or product names. Before registering, please take a moment to read the Forum Rules & Terms of Use so we can keep the community helpful, respectful and informative for everyone. Thanks for joining!

Decking varnish recommendation

 
DIY
Last Post by Mars 4 years ago
4 Posts
3 Users
2 Reactions
2,307 Views
RSS
Mars
 Mars
(@editor)
Illustrious Member Admin
Joined: 5 years ago
Posts: 4798
Topic starter 28/01/2023 11:27 am   [#784]

Two years ago, we treated and painted the decks in our back garden using a Dulux decking paint - I think it was called Cuprinol. The paint has weather, chipped and looks awful. This spring/summer, we're going to sand the decks down and wanted to know if anyone can recommend a high quality decking varnish that we can use.


New to heat pumps? Take the Heat Pump Fundamentals course and use INTRO50 at checkout for 50% off.
Rewritten and updated for 2027
📘 From Zero to Heat Pump Hero
🛠️ Bodge Buster
🎧 Prefer to listen? Heat Pumps Explained – use AUDIO50 at checkout for 50% off.


   
Quote
Dunlorn
 Dunlorn
(@dunlorn)
Estimable Member Member
Joined: 4 years ago
Posts: 79
28/01/2023 11:39 am  

A window restorer recommended Demidekk products to me a while back. I've used it on some exterior woodwork and a timber shed. It goes on a treat and looks good but it's not been on long enough yet to draw too much of a conclusion. Worth investigating. 


2 x 12kW Samsung Gen6 ASHP, 5.6kW solar PV ground mounted c/w 10kWh Puredrive battery & Solis inverter.


   
👍
1
ReplyQuote
Majordennisbloodnok
 Majordennisbloodnok
(@majordennisbloodnok)
Famed Member Moderator
Joined: 5 years ago
Posts: 2054
28/01/2023 12:31 pm  

Ultimately, @editor, I wouldn't use a paint or varnish at all on decking. The concept of paint or varnish is a thin fairly flexible barrier to protect the wood, but the constant footfall is almost guaranteed to wear that barrier away fairly quickly. Rather than a varnish I'd opt instead for an oil; it soaks into the wood so the protective barrier is integral to the timber, it remains as flexible as the timber itself and any normal knocks become irrelevant to its protective capabilities. The downside, of course, is the fact you ideally want to give it a quick recoat each season to maintain the protection.

All of this is irrelevant, though, if your decking is grooved. In that case, trying to sand the existing paint away from the grooves will be a really intensive job I doubt you'd be interested in undertaking.

As a result, if oiling is an option then I've had good experiences with Sadolin and Liberon as brands and their decking oils would do the trick nicely. If oiling isn't an option then I would suggest you have a chat with your local Brewers or similar trade paint store; they might have a yacht varnish that would be suitable but most exterior varnishes are designed for wood that normally wouldn't be walked on (window frames, conservatories etc.).

Either way, I'd suggest you buy from a trade store rather than the likes of B&Q or Homebase. The paints, oils and varnishes at a trade store are generally fresher than those at a DIY store and that makes a difference for finishes that need to protect wood in harsh environments.


105 m2 bungalow in South East England
Mitsubishi Ecodan 8.5 kW air source heat pump
18 x 360W solar panels
1 x 6 kW GroWatt battery and SPH5000 inverter
1 x Myenergi Zappi
1 x VW ID3
Raised beds for home-grown veg and chickens for eggs

"Semper in excretia; sumus solum profundum variat"


   
👍
1
ReplyQuote
Mars
 Mars
(@editor)
Illustrious Member Admin
Joined: 5 years ago
Posts: 4798
Topic starter 28/01/2023 5:46 pm  

@majordennisbloodnok, the decks in the back garden aren't grooved, and the oil is a good idea. I'll looks into our options. Slippage is the only thing we need to consider. I like Sadolin as a brand. 

@dunlorn, thanks for the suggestion. I'll look into what Demidekk have to offer.


New to heat pumps? Take the Heat Pump Fundamentals course and use INTRO50 at checkout for 50% off.
Rewritten and updated for 2027
📘 From Zero to Heat Pump Hero
🛠️ Bodge Buster
🎧 Prefer to listen? Heat Pumps Explained – use AUDIO50 at checkout for 50% off.


   
ReplyQuote
Forum Jump:
  Previous Topic
Next Topic  
Share:

SPONSORS

Join Us!

Installer Finder

Degrees of Separation

Latest Posts

SPONSORS

Members Online

Click to access the login or register cheese
Protected By
Shield Security PRO