Does the letter have legal value?

It is a written notice of the lack of conformity, which is what the law asks for (article 12(5)). It does not replace legal advice. Keep proof of sending and the company's reply.

No. The text is generated in your browser and nothing is sent to JanelaCerta.pt. For anonymous site statistics we only count that the letter was copied, with no names or texts.

What if the company does not answer?

File a complaint in the electronic complaints book (the company has 15 working days to reply) and look at consumer mediation or arbitration. The guide explains each step.

Can I use it for other products?

The law is the same for consumer goods, but the examples of problems are about windows. Adapt the text before sending.

The company closed or changed name, what do I do?

You can demand repair or replacement directly from the manufacturer (article 40). Keep the window and glass labels and the invoice.

Complaint letter for faulty windows

Tell us what happened and the installation date; the letter is ready. See which stage of the legal guarantee you are in (30 days, 2 years, 3 years), choose what you ask for and copy the text into an email or registered letter. Free, and nothing leaves your browser. The letter is in Portuguese, because it goes to a Portuguese company.

Your case

Company

What you bought

For example: 5 PVC windows, or 1 balcony door. Write it in Portuguese if you can (janelas, porta de varanda).

Date the installation was finished

The law counts the period from here (article 11(2)). Check the invoice or the delivery note.

What is the problem

Since when (optional)

The date you noticed the problem.

Describe the problem (optional)

Where, when it happens, what you have tried. The more concrete, the better. Write it in Portuguese if you can.

The company already tried to fix it and the problem came back, or it refused or did not answer

Your name (optional)

Invoice number (optional)

Where you stand

Choose the date the installation was finished.

What the law says, in short

The company is liable for defects that show up within 3 years of delivery; if it installed the window, the count starts when the installation ends (articles 11 and 12 of Decree-Law 84/2021).
In the first 2 years the defect is presumed to have existed; after that the consumer must prove it (article 13).
You can choose between repair and replacement, free. Price reduction and cancelling only if the company failed, refused or the defect is serious, or in the first 30 days (articles 15, 16 and 18).
Notice must be by letter, email or another means that leaves proof (article 12(5)). Your rights lapse 2 years after the notice (article 17).

Read the full guide: rights and deadlines

Frequently asked questions

Prefer to get quotes?

Leave your name, phone number and town. Free, no obligation.