Your comprehensive guide to window and door installation

Want to read up on Measuring first?

Looking to breathe new life into your old house by giving it a makeover? You've come to the right place if you're one of those ambitious homeowners ready to embark on a mega DIY home improvement project. Windows and doors are what connect your home to the outside world, so you want to get your door installation and window installation right the first time.

DIY home renovations are incredibly satisfying, and we want to make sure you enjoy every bit of your window and door installation process. This is precisely why we've put together a comprehensive installation guide to help you replace your doors and windows. Why not download a copy onto your tablet so that you can have it by your side when you kickstart your project?

Download our comprehensive guide

Window installation and door installation are not rocket science, but you need to know what you are doing and be careful with every single step. If you get your door installation and window installation spot-on, you'll be looking at the results with satisfaction for decades to come. Our window and door installation guide is tailored to ensure that your new windows and doors will last a lifetime and continue to function flawlessly. 

Spot-on window installation - every time!

Just because you haven't been in charge of any home improvement projects before doesn't mean you can't execute one perfectly. Our complete guide to window installation and door installation is here to make any DIY project manageable even for beginners. Read our guide thoroughly, and we guarantee you'll be filled with confidence!

You want your new windows and doors to be both functional and aesthetically appealing, so it isn't a good idea to rush through the door installation and window installation process. The last thing you want is to discover problems with your new doors and windows not long after the installation and end up spending a fortune to rectify them. In a worst-case scenario, your warranty and household insurance may become invalid because of the incorrect window and door installation!

Therefore, we recommend setting aside a couple of hours to study the door and window installation process to make sure you understand each step before getting started.

Ensure proper insulation during door and window installation

Getting your new windows and doors properly sealed is a crucial step of your door installation and window installation process. Only with proper insulation can your double glazed windows effectively perform their function of preventing heat loss. In our door and window installation guide, we've included a section dedicated to the window and door insulation so remember to check it out!

Worrying about the potential problems you may be running into during your door and window installation? Fear not - our customer service team is always here to answer any questions you have. You can click the button on the right to contact us, and a lovely member of our customer service team will get back to you ASAP.

Our unique online ordering system

Here at Klar, we're ready to offer you a transparent and straightforward shopping experience. We're happy to guide you through every step of your buying journey, from taking measurements to installation.

When you order from Klar:

Measure your windows

✓ Customise the windows of your choice 

✓ Add your favourite windows to your basket to get a final summary of your purchase

✓ Complete your order and see your estimated delivery time 

Install your windows with the help of our comprehensive guide

Download our installation guide

It Is Easy to Order Windows & Doors Online

Measure your old windows and doors:

Read our guide on measuring


Find your new windows and doors


Receive your delivery and install it:

Read our guide on installing


Klar is a fusion between Danish and Estonian craftsmanship and carpenting expertise. We offer a wide range of windows and doors to affordable prices in Scandinavian design heavily inspired by the classical, minimalistic style you so often see in Estonian, Swedish, Danish and Norwegian homes. Our products are first and foremost created with durability in mind. We’ve partnered with Scandinavia’s leading manufacturers with regard to glass, locks and wood to ensure that you get the best possible windows and doors. 

We have a large selection of types of windows and doors for you to choose from. Although Scandinavian windows and doors follow a certain inspiration, the designs typically differ and as such, we have eight types of windows to choose from:

Our Windows:

  1. Top Guided Windows

  2. Fixed Windows

  3. Cottage Windows

  4. Casement Windows

  5. Georgian Windows

  6. Combination Windows

  7. Opening Floor to Ceiling Windows

  8. Fixed Floor to Ceiling Windows

Our Doors:

  1. Front Doors

  2. Patio Doors

  3. French Doors

  4. Doors with Sidelight

  5. Sidelight to Front Doors

All of our windows and doors are made-to-measure

You can customise your windows and doors exactly to your liking with your needed measurements. Choose between materials, colours, handles, glass types and glazing. When choosing your new windows and doors, the most important aspect is figuring out which type of glazing you’d ideally want. At Klar, our minimum is double glazed windows and the same is with our doors. That is simply because double glazing ensures a large amount of energy efficiency. If you’d like, you can opt for triple glazing, resulting in excellent insulation and an even bigger reduction in condensation on the glass. 

One important thing to know about the materials we use, specifically with regard to our timber, is that we only use slow-grown high-quality FSC pine wood without knots. That is simply to ensure maximum durability for our doors and windows.

We also offer our doors with either double glazed or triple glazed windows. Choose between wooden front doors or aluminium composite front doors. If you’re looking for patio doors, we offer these as either wooden patio doors or AluClad patio doors.

Insulating windows and doors

New windows and doors keep your home warm and gives you peace of mind by leaving external noise outside.

The Measuring Guide

It's a nice feeling even to be involved as much as possible when it comes to your home. In fact, you can go a long way by measuring and ordering your new windows and doors yourself. It is much easier than you think.

Related Content