A coating brushed onto a finished wall covers five faces of every board and misses the sixth. Ours goes on in the mill, before a single board is fixed — all the way round, indoors, in conditions we control.
Why we do it
Coated before it is fixed. Including the face you will never see again.
Three things change when the coating goes on in a mill instead of up a ladder.
01
Every face, the back included
Boards go through coated all the way round — front, both edges, and the back
that ends up against the batten. It is the one face nobody ever inspects and the one
that spends its life in a damp cavity. Coating it is straightforward on a line and
effectively impossible once the board is on a wall.
02
A controlled environment
Coatings have conditions — temperature, humidity, a surface free of dust and
rain. Indoors those are settings. On a Scottish elevation in November they are the
weather, and the weather decides how the film cures.
03
It is what the industry recommends
Where a coating is specified, factory application before installation performs best
— that is Timber Development UK's guidance and Accoya's, not our sales line.
The same guidance asks for at least one coat on all faces, end grain included,
before the board goes up.
Sources: Timber Development UK and Accoya specification guidance, checked
2026‑07‑30. Full citations are held with the answers they support.
The four
Four coatings, and they are not variations on one idea.
A translucent stain, an opaque paint, a silicate that greys the timber deliberately,
and a charred face that is not a coating at all. Pick on how you want it to age, not
on the colour it starts at — that is the choice you live with.
Natural Stain
Known to us as Sikkens 771
A translucent stain that keeps the grain visible and warm. Known to us as Sikkens 771 — factory applied, so every board arrives finished and ready to fix.
Grain
Visible
Care
Recoat every 3–5 years on exposed faces; sheltered walls stretch to 5–7
Solid Colour
Known to us as Remmers
A flat, opaque colour with full protection — any RAL colour. Known to us as Remmers, applied in the factory for an even coat on every face.
Grain
Hidden — though sawn texture still shows through the film
Care
A maintenance coat around years 8–12; dark south-facing colours sooner
SIOO:X
A silicate treatment that weathers the timber to an even silvered grey-white over 8–12 weeks — the weathered look without the years of waiting, and even weathering after it.
Grain
Visible
Care
A top-up coat between years 3 and 7; a full re-treat around year 15
Shou Sugi Ban
The charred face. Deep, textured black that is UV-stable and remarkably low maintenance — charred in-house, ready in two weeks like everything else.
Grain
Charred texture
Care
Deep char: none the timber needs. Brushed: re-oil to hold the colour.
Two colours on the shelf. Any other one is mixed for you.
Solid Colour is a Remmers system. We hold two colours in stock; everything else is
matched to the RAL standard and mixed to order.
RAL 9005Jet blackIn stock
RAL 7016Anthracite greyIn stock
Any other RAL2,041 colours, mixed to orderTo order
A custom colour is bought by the tin rather than by the square metre, and whatever is
left over ships with the cladding so there is a matching pot on site for cuts and
knocks. At 0.26 litres per m² — the Remmers figure
for two factory coats — a 10 litre tin covers around 38 m²
and a 20 litre tin around 76 m².
Pick the exact colour on any species page: the Solid Paint swatch opens a RAL picker
that carries the code through to the calculator and onto the quote.
Choosing between them
How they age.
The real question is whether the timber keeps its colour or silvers — that is
what separates the finishes. Intervals are realistic for UK cladding, checked against
each manufacturer's own guidance; south- and west-facing walls sit at the short end.
Natural StainKnown to us as Sikkens 771Visible
Middle of the pack
Fades gradually — never flakes or peels. A recoat goes straight over, no sanding.
CareRecoat every 3–5 years on exposed faces; sheltered walls stretch to 5–7
Solid ColourKnown to us as RemmersHidden — though sawn texture still shows through the film
Holds longest
Holds its colour longest of the four. Chalks slowly rather than flaking.
CareA maintenance coat around years 8–12; dark south-facing colours sooner
SIOO:XVisible
Leaves its colour soonest
Golden at first, silvering within months, mature silver-grey by year two — evenly, all the way round the building.
CareA top-up coat between years 3 and 7; a full re-treat around year 15
Shou Sugi Ban — Deep CharNo visible grain — alligator char
Holds well
The carbon layer is the UV protection. Stays black for decades; the odd char flake is cosmetic.
CareNone the timber needs — re-oil only if you want it jet black forever
Shou Sugi Ban — Charred & BrushedGrain revealed through the char
Sheds colour early
The oil, not the char, carries the colour — left alone it weathers like any stained board.
CareRe-oil every 3–10 years to hold the colour; optional if silvering suits
"Holds its colour" scores how long the original colour lasts — SIOO:X
sits lowest by design, because silvering is the point, and its silver endpoint is
itself stable for 10–15 years. Checked against the Sikkens Cetol WF 771 and
Remmers Induline technical datasheets and the SiOO:X care manual, 2026‑07‑29.
Guidance, not a guarantee: timber weathers to its own site.
After it arrives
The one job the factory cannot do for you.
A board cut on site has a raw end, and end grain is where water gets in. That cut has to
be sealed before the board goes up.
Every coated order ships with touch-up paint
A free tub, in your colour, for sealing cut ends and tidying any damage. That
includes coated charred boards. You do not need to buy a separate end-grain sealer
for a coated Tiny Temple order — it is in the delivery.
What the coating makers specify generally
For Natural Stain (Sikkens Cetol WF 771), AkzoNobel specifies Kodrin
WV 456 end-grain sealant, with damaged areas repaired using a primer coat of
WF 771 followed by WV 456. For Solid Colour, Remmers specifies Induline
SW‑910 on cutting edges and end grain. Useful to know; our touch-up tub is
what a Tiny Temple order actually needs.
Manufacturer products named above are from AkzoNobel and Remmers technical literature.
The touch-up tub is Tiny Temple's own, confirmed by the team 2026‑07‑31.
See it before you specify it.
Samples are free and posted on request — name the species and the finishes you
want, brushed and charred included. Or price a coated spec straight away.