DIY home improvements: what you can tackle, what you really shouldn't.

Painting, assembling furniture, swapping faucets, cosmetic upgrades and minor repairs are perfectly DIY. Anything that touches structure, hidden plumbing, electrical panels or load-bearing walls should go to a licensed pro. If you are not sure, Wolly offers a 49,90 € technical diagnosis that tells you exactly what you can do yourself and what you cannot.

Dust the wall, sand glossy areas, fill holes with filler, sand again once dry, and apply a primer if the wall is new, very worn or you are switching colours dramatically. Skipping primer is the most common mistake: it forces extra coats and a duller finish.

Yes. Swapping handles, hinges and door fronts is one of the best DIY upgrades: it refreshes the kitchen for a fraction of a full remodel. Measure the existing handle hole spacing carefully and check door thickness to pick compatible hinges.

Cut out the old caulk with a blade, clean with alcohol, dry thoroughly, then apply neutral anti-mould silicone with a gun, smoothing it with a finger dipped in soapy water. Wait 24 h before exposing it to water. Acrylic caulk is cheaper but lasts half as long: in wet areas, neutral silicone is worth it.

Click laminate and SPC are the most beginner-friendly floors: they float over an underlay with no glue or wet work. The keys are a level subfloor (max 3 mm deviation in 2 m) and an 8–10 mm perimeter expansion gap. A 15 m² room is an afternoon job.

Swapping outlets, switches and light fixtures (with the breaker off) is widely accepted DIY. Anything that means running new cable, expanding the panel, modifying the main breaker, or new installs in kitchens or bathrooms must be done by a licensed electrician, who in Spain may also need to issue an electrical certificate (CIE) after a major remodel.