# High Protection impregnating stain: when and how to use it on exterior wood > Everything you need to know about the most requested product in the Covema Linea Legno URL: https://legno.covemavernici.com/en/bottega/impregnante-ad-alta-protezione-quando-e-come-usarlo-per-il-legno-esterno #### Everything you need to know about the most requested product in the Covema Linea Legno - [impregnating stains](https://legno.covemavernici.com/en/bottega?tag=impregnating%20stains) - [exterior wood](https://legno.covemavernici.com/en/bottega?tag=exterior%20wood) - [impregnante alta protezione](https://legno.covemavernici.com/en/bottega?tag=impregnante%20alta%20protezione) Category: Wood Products Reading time: 4 min If there is one product in our range that has attracted more attention than any other this year, it is the High Protection impregnating stain. **And that is no accident: it is designed to answer a very simple question — how do I protect my exterior wood without too much worry, for as long as possible?** #### What it is and how it works Impregnante Alta Protezione (65.665) is a deep-penetrating, non-yellowing impregnating stain for exterior use, formulated with binders based on acrylic and urethane resins in emulsion and a special blend of UV filters. **Unlike a varnish, it does not form a rigid surface film: it penetrates the fibres, nourishes them and leaves the wood breathable, following its natural movements without peeling or cracking.** It has a specific action against mould and blue stain fungus — two of the main causes of aesthetic and structural deterioration in damp or poorly ventilated areas — and it works in depth, not just on the surface. #### Where to use it It is designed for anything that is exposed and needs serious protection: balconies, garage doors, wooden houses, beams, wooden carpentry work. **It is the right choice when the item is in direct, continuous contact with the weather, not just occasionally.** A useful and often underestimated feature: it can also be applied over previous finishes based on solvent-based impregnating stains, provided they have been sanded and properly cleaned. **If you are renewing an element treated in the past with a different product, you do not have to go back to bare wood: you just need to prepare the surface correctly.** #### How to apply it The product is ready to use, with no thinning. The approximate coverage is 6-8 m²/L, so for a medium-sized project — a veranda, a set of garden furniture — a 2.5-litre tin is generally enough for two coats. Drying is fast: about one hour to touch, six hours through, with recoating possible after a minimum of six hours. **Weather permitting, a project can be completed within a single day.** #### Practical tips for a long-lasting result Always apply at least two coats, observing the stated recoating times: the first coat nourishes the wood in depth, the second builds the final protective layer. Avoid applying the product in full midday sun in summer: drying too quickly can compromise the evenness of the finish. **If the wood is new, check that it is well seasoned before treating it: too much residual moisture reduces the effectiveness of penetration.** #### When to choose another product in the range instead Alta Protezione is designed mainly for protection, with a good natural-looking result. If you also want a more refined, wax-like effect, or you are working on beams and roof spaces where the risk of runs is higher, Impregnante e Finitura Effetto Cera (65.675) — with its drip-free gel structure — is probably more suitable. **If instead you are working on very absorbent or particularly degraded wood, a solvent-based impregnating stain such as Ecologic Legno (62.620) can ensure deeper penetration.** #### In summary Impregnante Alta Protezione is currently the most searched-for product in our Linea Legno: deep protection, action against mould and fungi, quick and easy application, and compatibility even with surfaces treated in the past. **If your project involves highly exposed exterior wood — balconies, garages, beams — it is the first product to consider.** #### Recommended products [BACK TO THE WORKSHOP](https://legno.covemavernici.com/en/bottega) #### Related articles - [impregnating stains Wood impregnating stain: a guide to choosing among the 4 impregnating stains in the Covema range Wood Products 4 min Alta Protezione, Effetto Cera, Seriltop or Ecologic: how to find your way among Covema impregnating stains for your project READ](https://legno.covemavernici.com/en/bottega/impregnante-per-legno-guida-alla-scelta-tra-i-4-impregnanti-della-gamma-covema) - [impregnating stains Water-based or solvent-based impregnating stain: differences, coverage and when to choose each Wood Products 4 min A practical guide to understanding which technology to choose for your wood protection project READ](https://legno.covemavernici.com/en/bottega/impregnante-allacqua-o-a-solvente-differenze-resa-e-quando-scegliere) - [exterior wood Wooden garden house or shed: how to choose the right treatments for long-lasting protection Ideas with Wood – Outdoors 3 min From small sheds to chalets: a guide to protection cycles for outdoor wooden structures READ](https://legno.covemavernici.com/en/bottega/casa-o-casetta-in-legno-da-giardino-come-scegliere-i-trattamenti-giusti-per-una-protezione-duratura) - [exterior wood Exterior wood paint without sanding: a guide to quick renewal cycles Application Tips 4 min How to restore colour and protection to outdoor furniture, railings and window frames without hours of sanding READ](https://legno.covemavernici.com/en/bottega/vernice-per-legno-esterno-senza-carteggiare-la-guida-ai-cicli-di-rinnovo-rapido)