Full-Width Rear Extensions

A full-width rear extension creates opportunities for a more dramatic rear elevation.
 

Depending on the width of the property, you may be able to use:
 

• wide sliding doors;

• bifold doors;

• a combination of doors and fixed glazed panels;

• picture windows;

• corner glazing;

• rooflights;

• a roof lantern; or

• clerestory windows above worktops or fitted furniture.
   

This type of extension often works well for homeowners who want to create a large kitchen, dining and family room.
 

The glazing should be designed as part of the overall layout rather than chosen as an afterthought.

 

Crittall-Style and Steel-Look Doors

Steel-look and Crittall-style doors remain popular with homeowners who want a more characterful appearance.

They can work well in:
 

• period properties;

• Victorian and Edwardian homes;

• kitchen-diner extensions;

• internal glazed partitions;

• side-return extensions; and

• garden-facing family rooms.
   

The slim dark frames can provide a strong visual contrast and help define different areas without losing natural light.
 

They can also be used internally between a hallway, dining room or living space where the homeowner wants to retain a sense of separation.

 

Entrance Doors and Internal Glazed Doors

The rear glazing may be the main feature, but other doors can also affect the finished result.
 

A wider renovation or extension project may include:
 

• a replacement front door;

• a new side-access door;

• internal glazed doors;

• glazed partitions;

• utility-room doors;

• fire-rated internal doors; and

• improved access to the garden.
   

Internal glazed doors can be particularly useful where a homeowner wants to divide spaces without making the ground floor feel dark or enclosed.

 

Think About the Garden at the Same Time

The best extension designs consider the relationship between the room and the garden.
 

Before choosing the final glazing arrangement, it is worth thinking about:
 

• where the patio will sit;

• whether the floor levels should align;

• where garden furniture will be positioned;

• whether the doors will open into a clear area;

• how much privacy is required;

• whether trees or neighbouring properties affect the outlook; and

• how the extension will look from the garden.
   

A large opening is not automatically the best answer.
 

Sometimes a more balanced arrangement of doors, fixed glazing and wall space will create a stronger result and make the room easier to furnish.

 

Thermal Performance and Comfort

Large areas of glazing can look impressive, but comfort and energy performance also matter.
 

Modern doors, windows and rooflights should be chosen carefully so that the extension remains comfortable throughout the year.
 

Important considerations include:
 

• insulation performance;

• glazing specification;

• frame materials;

• solar gain;

• ventilation;

• orientation;

• overheating risk;

• security;

• guarantees; and

• installation quality.
   

A south-facing extension with extensive glazing may need a different approach from a north-facing extension.

 

Do You Need Drawings Before Requesting Quotations?

It is usually better to obtain quotations after the main design has been established.
 

The drawings should identify:
 

• the approximate opening sizes;

• the number and position of doors;

• the location of windows;

• the type and position of rooflights;

• the roof form;

• the relationship with the kitchen layout; and

• the general design intent.
   

This allows suppliers and installers to provide more meaningful quotations.
 

It also reduces the risk of choosing doors or rooflights that do not work properly with the final structure or layout.

 

Compare More Than the Price

When comparing quotations, do not look at the headline figure alone.
 

Check what has actually been included.
 

Ask about:
 

• frame material;

• glazing specification;

• U-values;

• colour and finish;

• handles and ironmongery;

• security;

• trickle vents;

• lead times;

• installation;

• making good;

• warranties;

• deposit requirements; and

• aftercare.
   

A cheaper quotation may not include the same specification or level of service.

 

Need Help Finding Suitable Glazing, Rooflight or Door Specialists?

APN Extensions helps homeowners understand the different stages of a house-extension project and identify the services they may require.
 

Where appropriate, we may introduce you to relevant independent glazing specialists, rooflight suppliers, door installers and other professionals who may be able to review your project and provide quotations.
 

You are under no obligation to appoint any provider introduced through APN.

 

Tell Us About Your Extension

Planning an extension and considering bifold doors, sliding doors, rooflights or a roof lantern?

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Tell us a little about your property and the type of extension you are exploring.