Window and door systems

for ArchiCad, Revit and Allplan

Feasibility check for your windows & doors

Perfectly connected with digital exchange

• Window construction software
• Planning software
• Configurator

BIM content from REHAU

The better solution!

Windows and doors are complex products with a multitude of variants, layouts and colour options.

REHAU writes the MODULAR CONCEPT in capital letters. Our content includes windows, balcony doors, sliding doors and front doors in different divisions – for all your ideas.

REHAU window & door systems are available in the BIM formats ArchiCad, Revit and Allplan.

of the constructability in real time directly in the software

Are you annoyed about unnecessary coordination efforts regarding maximum dimensions and buildability of your elements?

No problem. With the REHAU planning tool in Revit, ArchiCad and Allplan you can promptly perform an automatic feasibility check of the windows and doors without additional effort.

REHAU enables an ideal interconnection of all parties involved in the design and construction process.

With the REHAU BIM interfaces for planning software and window construction software, window manufacturers and design offices can optimally support the BIM formats. They can work on projects with the right partners and receive digital offers and design services in the standard BIM formats.

Learn more about the optimized processes: contact us at bim@rehau.com.

The right software for everyone

Software processes completely thought through. From design, tendering to production.

REHAU’s own window construction software (REF) connects all important processes for window and door manufacturers to control production and planning. In just one solution. The constant expansion with new modules and the seamless connection with the online design software and architect software is a matter of course for us.

The REHAU design software is specially designed to meet the needs of planners and architects. With REHAU, you not only benefit from high-quality products, but also from intuitive workflows. Benefit from REHAU with solutions from a single source.

REHAU product variety

REHAU provides a large portfolio of components for the construction of a building – from heating, pipes and furniture to the eyes of a house, windows and doors.

Discover the variety of REHAU and be always up to date in your BIM planning with the component management system waya powered by BIMsystems.

Receive the latest REHAU products quickly and easily via a plugin in your BIM software.

Planning your Project

Learn everything you need to know about fitting your home with the best windows and doors from Milgard.

Home improvement projects are an investment of time and money, so making informed purchasing decisions is vital. Before all that begins though, there are many necessary steps to take in order to most effectively plan and see through your windows and doors renovation. Below you will find a variety of resources to help you start your project, understand expectations, budget and more. With Milgard windows and doors, you are guaranteed quality products, leaving your mind free to focus on getting the project done well.

Begin by learning what is important to consider as you start your project.

In either replacement, home improvement projects or new construction plans, you will often work with at least one professional.

Once you have selected your new windows and doors, it’s time to begin installation.

Tips for establishing and managing your budget during your home construction plan or door and window project.

Get a pricing quote on your door or window project from a Milgard Certified Dealer today.

A six-step checklist to ensure everything is complete after the installation.

Doors and windows

Building Regulations

Since 1 April 2002 building regulations have applied to all replacement glazing. The regulations apply to thermal performance and other areas such as safety, air supply, means of escape and ventilation.

An external window or door is a «controlled fitting» under the Building Regulations and as a result of this classification these Regulations set out certain standards to be met when such a window or door is replaced.

General guidance on the performance expected of materials and building work in order to comply with the building regulations and practical examples and solutions on how to achieve compliance for some of the more common building situations can be found in the approved documents section.

You could use an installer registered with the relevant competent person scheme. A registered installer will be approved to carry out the work to comply with building regulations without involving local authority building control. When work is complete you will receive a certificate showing the work was done by a registered installer. More information about Competent Person Schemes can be found on the Gov.uk website.

Alternatively, you could use an unregistered installer or DIY, in which case approval can be sought from the relevant Building Control Body – either at your Local Authority or an Approved Inspector. They will check the replacement window(s) or door(s) for compliance and, if satisfied, issue a certificate of compliance.

Thermal Heat Loss

Dwellings are required to be energy efficient. A method of achieving greater energy efficiency is to take steps to reduce the amount of heat that is lost through the glazing in both windows and doors.

If you are to install windows and doors you should be aware that they need to comply with the requirements of the Building Regulations in relation to the amount of heat that can pass through the glass and framework, which is measured as a U-Value. This U-Value should not be exceeded. For information on the maximum U-Value allowed please refer to Approved Document L-1B, Table 1.

Safety glazing

Safety glazing should be provided to any glass in a critical area. Below is a list giving general view as to when safety glazing is required:

• Unobstructed openable area: At least 0.33 square metres and at least 450mm high and 450mm wide
• Within any glazed door up to 1500mm from floor level.

See diagram 5.1 in Approved Document K for more information.

Ventilation

Windows and doors provide ventilation to rooms within a dwelling and rules apply to how much ventilation. The type and extent of ventilation will be dependent on the use and size of the room. For example, rooms where steam will be produced (kitchens, bathrooms, utility rooms etc) should be provided with higher levels of ventilation (normally mechanical fans and windows) than other rooms where suitably sized window openings and background («trickle») ventilators may suffice.

Fire Safety

There are two aspects to be considered:

• Fire spread between properties through «unprotected areas»
• Means of escape in case of fire.

Unprotected areas

External doors and windows may need to have fire resistance and (in the case of doors) be self-closing or (in the case of windows) be fixed shut to limit the risk of fire spread between adjacent properties. The area of walls, doors and windows permitted to have reduced or undetermined fire resistance (known as “unprotected areas”) will be dependent on how close these elements are to the boundary.

Means of escape

When replacing any window, the opening should be sized to provide at least the same potential for escape as the window it replaces. If the original window that is being replaced was larger than necessary for the purpose of escape, then the new window opening could be reduced down to the minimum as specified in the criteria below.

The means of escape should be considered for any new window installed to an extension or existing dwelling. If an escape window is required then criteria set out below should be followed. It is also generally good practice to replace any window on the first floor that is not used as an escape window with an escape window.

See below for the general criteria for egress windows:

• Width and Height — Either of these are not to be any less than 450mm
• Clear Openable Area — No less than 0.33m²
• Cill height — The bottom of the openable area should be no more than 1100mm above the floor area.

Only one window per room is generally required.

Access to buildings

When replacing main entrance doors in a dwelling unit that has been constructed since 1999, it is important to ensure that the threshold remains level otherwise the works will not comply with the Building Regulations as it would be making the threshold worse than it was when constructed. This is to enable people, including those with disabilities, to have continued access to the dwelling.

Build Aviator’s estimating service can help you plan your project by providing an accurate cost of the proposed changes. Find out more.

Disclaimer

This is an introductory guide and is not a definitive source of legal information. This guidance relates to the planning regime for England. Policy in Wales may differ. If in doubt contact your Local Planning Authority.

Find a Trade Professional

Use our partner directories from RIBA, FMB, or RTPI to find an architect, builder or planning consultant to help with your project or development.

Windows and Doors

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