1 / 7SIRAMICO COATINGS S1059 Wood Hardener, 500ml
SIRAMICO COATINGS S1059 is a liquid hardener intended to treat wet or rotted timber. The listing claims brush-or-roller application, use on damp wood and coverage of up to 8 square metres, but gives no application rate or curing time.
At a glance
- The listing describes a clear, deep-penetrating hardener suitable for timber and claims use on damp wood.
- Listed for interior and exterior timber, with window sills, door frames and structural beams given as examples.
- A 500ml container is claimed to cover up to 8 square metres. Actual coverage may vary with the wood and its condition.
Often bought together
Pros and cons
Pros
- Can be applied with a brush or roller according to the listing.
- The stated coverage gives buyers a planning estimate for smaller timber-treatment jobs.
Technical specifications
10 specifications| Brand | SIRAMICO COATINGS |
|---|---|
| Model | S1059 |
| Form | Liquid |
| Compatible material | Wood |
| Liquid volume | 500 Millilitres |
|---|---|
| Coverage | 8 square meters |
| Number of packs | 1 |
| Weight listed | 500 Grams |
|---|
| Finish type | Matte |
|---|
| Use | treating wet and rotted wood, strengthening and protecting wooden structures |
|---|
What to know before buying
Listing details to confirm
The listing calls the finish both clear and matte. It also describes coverage as up to 8 square metres, while the recommended-use text names wet and rotted wood and does not specify application rate, curing time or how coverage varies by timber condition. Confirm finish and directions on the selected product before use.
What’s in the box
Included- 1 product unit
Who is it for?
A good fit for
- DIY repairs to damp or rotted timber where a liquid hardener is appropriate.
- Buyers treating smaller areas such as window sills or door frames who can follow the product label for application and curing.
Less suited to
- Buyers who need a stated curing time, application rate or guaranteed coverage for a particular timber condition.
- Buyers seeking a wood filler or a product with a confirmed final appearance.

Customer reviews on Amazon
- 5 stars
68% 68% - 4 stars
18% 18% - 3 stars
6% 6% - 2 stars
2% 2% - 1 star
6% 6%
Customer feedback is generally favourable about ease of application, drying, absorption and the way the treated wood feels harder. Consistency and hardening are not uniformly described, including a comparison to watered-down PVA glue. That variation matters when judging application feel, while the listing does not provide a curing time or measured hardening performance.
Positive themes
- Customers describe the product as easy to apply and report that it dries and absorbs well.
- Feedback reports that treated wood feels stronger or harder.
Mixed feedback
- Consistency and hardening receive mixed feedback. One comparison describes the liquid as similar to watered-down PVA glue.
Frequently asked questions
How much area does the 500ml container cover?
The listing states coverage of 8 square meters, and a feature claim phrases this as up to 8 square metres. Treat it as an estimate rather than a guaranteed coverage rate.
Can it be used on damp timber?
The listing says the liquid can be used on damp wood and is intended for wet and rotted wood. Follow the product label for preparation and application.
Is it for indoor or outdoor use?
The listing claims suitability for both interior and exterior timber, including window sills, door frames and structural beams.
What finish does it leave?
The listing is inconsistent: it identifies the finish as matte and also describes the hardener as clear. Check the selected product's label if the final appearance matters.

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