Open your home
to Comfort to Security to Energy Savings

The Double Glazing Company



Aluminum window brand Kline CLASSE A+

Kline CLASSE A+ 03-02-2021
Aluminum window brand Kline CLASSE A+


Awnings, tissue Dickson

Awnings 25-06-2020
Awnings, tissue Dickson


Window uPVC Germany Frames with mosquito net.

window uPVC 12-05-2020
Window uPVC Germany Frames with mosquito net.


Awning with glass curtains

Awning with glass curtains 26-02-2020
Awning with glass curtains


Making customers happy

Renovation 19-12-2019
Making customers happy


Entrance Door uPVC Germany Frames, with int...

Entrance Door 26-07-2019
Entrance Door uPVC Germany Frames, with internal shutters.


Our Customers

"Strongly advise Casa das Janelas (House of Windows), the work they did in my house was very good."
Sr. Rodrigo Antunes

"I really enjoyed the work done in a professional way and always available."
Sra. Rita Soares

"Available and were very quick in execution of work."
Sr. Fernando Martins

"We are very pleased with the standard of work carried out and the quality of the products. Marco was excellent at dealing with all the modifications that were required with the security grilles. We would be happy to recommend your company to your potential customers. Please feel free to use the above comments as a testimonial for your company. Regards Terry"
Terry Adamson

"Good Evening Carlos, I wanted 2 tell u how well Marco & João worked 2day . They never stopped + the door looks gr8. Many thanx , Yvette O. "
Yvette Oldham

"Bom dia Carlos , Thanks for your note. Your 2 colleagues did a fantastic job, clean and efficient. I have made the transfer of the remaining cash €1958 and this should be with you sometime this coming week. Phil Marshall ( Açoteias ) "
Phil Marshall

"I had before a negative experience with other window company and therefore i was afraid but CasadasJanelas realized a very good job. I recommed strongly. "
Rogerio Clemente

"Your work was excellent. Not only did it live up to our expectations, it did have that extra and made it really outstanding. The material it is hi quality, but the service made the difference, for the service and effectiveness, as well for the care in the finishing, with important details like the replacement of the curtains and impeccable cleaning. Many congratulations for the dedication and professionalism."
Isabel Marques

"Bonjour Marco, Ci-Joint vous trouverez l'avis de virement du solde. Merciencore pour la qualité et le sérioux de votre travail. Cordialement. Manuel da Silva"

"The team from Casa das Janelas were great to work with from start to finish; utterly professional and very nice too. They always came when they said they would, made excellent recommendations for solutions, completed the work to the timescale and cost they'd indicated, and went away leaving everything beautifully tidy! I will certainly be contacting them again about future work. Deirdre Tinney"
Deirdre Tinney

"We are absolutely delighted with the work, thank you. Best wishes. Tom"

"Thank you for the completed works. My husband and I appreciate all your work. I´ve not seen the mosquito screens yet but my husband is happy. Kind regards, Nuala"

"Exceptional service from start to finish! Highly recommended. Casa das Janelas replaced all our windows and doors and we couldn't be happier. From the offset, Nuno was very professional answering all questions, responding to emails within an hour and going through in detail the pre sales quote and installation process. Which were a lot cheaper than others we had received!! On the day of fitting, the team arrived early, were courteous throughout, and their attention to detail was simply outstanding. The windows and doors are of high quality, beautifully fitted and the making good around the frame, amazing.Our expectations were far exceeded and we wouldn't hesitate in recommending to others. This was all carried out throughout a global pandemic! Thank you for transforming our home! Claire Hill"
Claire Hill

"Excellent job. Great Professionalism in Pre-Sales to recommend the best solution, seriousness in budgeting, delivery deadlines perfectly completed in time, and the technicians who installed the windows and doors properly aware of the work they were doing. Recommend this company."
José Fernandes

"Hi Marco and Nuno The fitters have just left the house. I must say how pleased we are with the end result and what a fantastic team you have. They were hardworking and helpful and very careful in our house. They take pride in their work (unusual these days). The quality and look of the windows is fantastic and impossible to tell the difference from the originals. Thank you so much. Best Terry"