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OtherImpregnation

XHC3

XHC3 "Hydrochrome" clear wood impregnation

Clear protective impregnation for exterior wood. Even colour, strong protection, including against fungi, mould and wood pests, excellent weather resistance, high lightfastness and easy application.

  • exterior timber (listed under the official "Exterior" category)
  • protective base treatment under exterior lazures and lacquers
  • windows: production impregnation by dipping or flow coating

Single-component product: no mixing needed — use as supplied (see application below).

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Mixing matrix

  • Thinner
    % by weight: 0 %recommended

    Use as supplied.

    Don't thin until you know the base. Never guess with water or S50/S80; pick the wrong one and you ruin the batch.

Percentages are per 100 parts of component A.

Characteristics

Components
1K, ready to userecommended
Biocide
protects against fungi, mould and wood pests (грибки, плесень, паразиты)official
Weather resistance
excellent (отличная сопротивляемость погодным явлениям)official
Lightfastness
high (высокая светоустойчивость)official
Colour uniformity
goodofficial
Consumption
40–60 g/m²official

Colours

  • XHC3 · clear

Application

Dipping

Consumption
40–60 g/m²official
Coats
1 immersion coatsrecommended

Immerse briefly, lift out, let the excess drain off, then dry. Dipping gives good penetration into the wood, which is why it is often used for protective impregnation-stains in window production.

Flow coating

Consumption
40–60 g/m²official

Flow coating: vertically hung parts pass on a conveyor through a frame of nozzles; the run-off collects in the lower tank and returns through filters in a closed loop. Used mainly for stains.

Brush

Consumption
40–60 g/m²official
Why ru
Стандартная практика нанесения кистью проникающих пропиток для наружных работ: торцы впитывают больше всего и разрушаются первыми.

Apply generously along the grain, flood end grain twice and brush out any surplus. Don't leave puddles.

HVLP

Consumption
40–60 g/m²official
Nozzle
1–1.3 mmrecommended
Pressure · air
1.5–2 bar (gun inlet, trigger pulled)recommended
Pressure · fluid
0.2–0.5 bar (pressure pot, if used)recommended
Spray viscosity
as suppliedrecommended
Gun distance
15–20 cmrecommended
Coats
1–2 coatsrecommended
Flash-off
30–60 minrecommended
Recoat
2–4 h before lazure/lacquer topcoat (overnight if cold/damp)recommended

One even wet coat with no runs; take extra care on end grain and joints. Spray impregnations only in a booth with extraction and wear a respirator (biocides).

Airmix (air-assisted airless)

Consumption
40–60 g/m²official
Nozzle
0.18–0.23 mm (007–009 thou), 20–40° fanrecommended
Pressure · fluid
6–12 barrecommended
Pressure · air
1–2 barrecommended

Process and compatibility

Substrate preparation
Dry (12–15 % moisture), clean, dust-free timber with no old film finish, resin or dirt; sand to P120–P150 (no finer, or the impregnation won't soak in).recommended
Goes over
bare wood
Sanding
Don't sand back through the impregnation after it is applied. If a film finish follows, only knock down raised grain lightly at P220–P240.recommended
Temperature and humidity
+15 to +25 °C, RH ≤ 75 %; don't apply to wet or sun-heated wood, or with rain due.recommended
Don'ts
  • don't thin until the base is known
  • don't apply over old paint/varnish films
  • don't leave puddles or runs
  • don't sand through the impregnated layer

Storage

Safety: Contains protective (anti-fungal) actives: wear gloves and eye protection, plus a respirator and extraction when spraying. Exact requirements are on the label/SDS (not published).

Sources

Value tags: “official”, “dealer”, “catalog”, “schedule” are Technocolor data; “workshop” is from our own datasheets; “recommended” is our engineering estimate (hover to see the reasoning).

Not covered by the sources
  • Base not published (waterborne or solvent-borne?), which blocks any thinner recommendation
  • No dealer listing: t-colormarket.ru search for XHC3/«гидрохром» returns nothing; lakokraska31.ru, woodonline.ru and ndom31.ru also have nothing
  • Not in any catalogue transcript (2025 catalogue, exterior leaflet), and no technical data sheet (ТДС) found
  • Solids %, viscosity, density not published
  • Drying times (dust-free, touch, recoat, full) not published
  • Compatible topcoats or overcoat systems not officially stated
  • Thinner/diluent and allowed % not published
  • Shelf life, storage temperature, frost sensitivity, packaging not published
  • Hazard classification / SDS not published
  • Not used in any official finishing schedule (information/technology)
  • Sibling 'Гидрохром' products (XHT8/9/10/12/16/17/18/19 coloured impregnations, same official text and 40–60 g/m²; HZT12 converter) publish no base or tech data either, so they cannot fill these gaps