Simple thermal insulation upgrades that make sense in Portuguese homes

Full external insulation is not realistic for every Lisbon flat, especially in rented stock. Yet draughty doors, leaky shutter boxes, and cold loft hatches still steal heat.

Modest sealing and accessible layers often improve comfort before you invest in a bigger heating system.

Problem and practical fixes

Add brush strips and sweeps to street and balcony doors. Seal accessible loft hatches and pipe penetrations on top floors. Repair roller shutter boxes where seals failed.

• These steps pair with daily ventilation habits, not against them.
• Major envelope projects need specialists; we handle the interior follow-up.
• We do not promise exact savings; we focus on realistic, visible leaks.

CASAFIXA

After air sealing or small envelope jobs, we finish interiors: skirting, paint, and tidy refits around radiators or pipes. Our own team covers Greater Lisbon (no subcontractors) and usually answers quote requests within about 24 hours.

Discovery and quote

Write to info@casafixa.com or contact us on WhatsApp (+351 928 387 170). Describe the renovation need you have in mind for your home; support it with photos and send them to us. You can attach more than one photo. That way we can respond faster and more accurately.