Comprehensive carpentry renovations are the projects that bring the most satisfaction to both the client and to us. When a single point of contact handles everything — from windows to enclosures, solar protection and roof windows — the result is a coherent, coordinated whole that a collection of independent suppliers rarely achieves. This case shows how a renovation planned with a global vision transforms a home.
When the Martinez-Lopez family contacted us in September 2025, their 120 m² home in Granada's Zaidin neighbourhood had a common problem seen in many Andalusian homes: aluminium windows without thermal break installed in the 1980s.
Intense winter cold with constant condensation, unbearable summer heat even with air conditioning at maximum, excessive street noise, and very high energy use in the extreme months.
The family wanted a comprehensive solution, with a single point of contact handling everything. That is exactly what we offer at Tecnisun: full support from the technical study through to installation, with the manager present on site.
| Element | Condition Found | Assessment |
|---|---|---|
| Window material | Anodised aluminium without RPT (1980s) | Very poor |
| Glazing | Single 4 mm glass (no chamber) | Very poor |
| Measured Uw value | 5.7 W/m²K | Very poor |
| Airtightness | Class 1 (worst). Noticeable draughts | Very poor |
| Hardware | Oxidised, with play, windows that won't close | Very poor |
| Quantity | 10 windows throughout the home | — |
Tilt-and-turn, two-tone (white interior / anthracite exterior), double low-e glazing with argon and solar control. Uw from 0.8 W/m²K.
3-track lift-slide, 5 leaves. 5.00x2.50m. Double glazing with solar control. Motorised shutter with adjustable slats.
Exterior screens for south and west orientations. 3% anthracite twill fabric. Tubular motor with solar sensor.
114x140 cm centre-pivot, triple glazing (Uw 0.97 W/m²K), solar operation, blackout blind and mosquito screen.
The selection of each product was carefully reasoned based on the home's specific needs:
Irregular openings with deviations up to 15 mm: each window was ordered to measure after millimetre-precise laser level surveying. Terrace with 20 mm level difference: special lower guide with integrated drainage. Loft roof: rafter reinforcement with load-bearing frame for the FAKRO window.
Granada belongs to climate zone C3, characterised by cold winters with frequent frost and very hot summers. This dual extreme makes PVC an excellent choice for standard windows, as it offers very low Uw values. For the terrace enclosure, aluminium was necessary due to the large leaf dimensions required. The FAKRO roof window benefits from PVC framing as the exposed roof position demands maximum thermal performance year-round, and the FTP-V model delivers exactly that.
Installation was carried out by our regular team of professional installers, with Tecnisun's manager on site directing every stage.
| Metric | Before | After | Improvement |
|---|---|---|---|
| Average window Uw | 5.7 W/m²K | 0.95 W/m²K | -83% |
| Acoustic reduction | ~15 dB | 47 dB | Silence |
| Energy certificate | Letter F | Letter B | 4-letter jump |
"The difference is dramatic. The first winter after the renovation was a revelation: no condensation, no draughts, no cold. The terrace has become our favourite room — we have breakfast there every morning looking at Sierra Nevada. The loft is now my office, with incredible natural light thanks to the FAKRO window. If we had known the difference would be this great, we would have done the renovation years ago."
At Tecnisun C.B. we accompany you throughout your renovation project: technical study, solution design and professional installation with the manager present on site. Over 25 years in the trade. Tell us about your project in our quote form or call 627 84 14 04.
See comprehensive renovations →When the same company coordinates windows, enclosures, blinds and roof windows, the works run smoothly.
Old building openings are NEVER perfectly rectangular. Professional laser surveying avoids surprises on installation day.
Some grant schemes require you to apply before works begin. We advise you on what may apply in your case.
It is simpler to install SAXUN screen blinds during the renovation than afterwards.
There is no universal estimated price: simply changing the handle or the glass of the same window changes the quote. These are the most common scopes and what they include:
| Scope | Includes |
|---|---|
| Windows only | Windows + installation + removal of old units |
| Windows + blinds | Above + motorised blinds |
| Basic integral | Windows + enclosure or pergola + blinds |
| Full integral | All above + roof window + full motorisation |
Tell us what you need in our quote form: the online quote is free and without obligation; the technical home visit has a cost, which we tell you before arranging it.
A well-planned renovation improves comfort and quality of life from day one: less reliance on heating and cooling, silence, and rooms that were previously unused.
A successful carpentry renovation requires attention to many technical details:
In 1980s homes, original sub-frames are usually oxidised and deformed. At Tecnisun we remove the old sub-frame and install a new aluminium one with thermal break. It is an additional item, but it guarantees perfect levelling, thermal bridge elimination, and optimal sealing.
We use a triple-barrier sealing system: interior vapour barrier (expanding tape or membrane) to prevent condensation, low-expansion polyurethane foam for insulation, and exterior neutral silicone with reinforcing mesh for weather protection.
Beyond the numbers, the true value of a comprehensive carpentry renovation is measured in quality of life. The most valued changes by the Martinez-Lopez family after a few months:
With 47 dB acoustic insulation, street noise disappears. Sleep quality improved "dramatically" according to the family.
No more morning cold spikes in winter or afternoon heat in summer. The home maintains comfortable temperature naturally for more hours.
Moisture stains on walls near windows disappeared. No mould, no morning dripping on glass.
SAXUN screen blinds allow working without screen glare but with natural light. The loft with FAKRO is "another world" in luminosity.
You deal with a single point of contact throughout the entire project:
Explore all our windows and enclosures.
At Tecnisun C.B. we specialise in windows and enclosures and in comprehensive carpentry projects. The online quote is free and without obligation, based on your measurements and photos; the technical home visit has a cost, which we tell you before arranging it.
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Free, no-obligation online quote with your measurements and photos. The technical home visit has a cost, which we tell you before arranging it.