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Choosing Your Conservatory Base

A conservatory is often judged on aesthetics alone, with many home owners choosing a conservatory based on style and design.

It is important however, that the conservatory base is also considered. Your conservatory must be built on solid foundations.

Your choice of conservatory base will ultimately impact the cost as well as quality of your build. A large amount of its construction will relate to base work.

Conservatory Base Specification

Choose Your Conservatory BaseConservatory bases really need your special consideration. The foundations must be suitable for the size and design of your conservatory.

A fundamental part in the building process, it must be done right. Before the design, manufacture and installation of your conservatory you will at first need a site survey.

A flat level surface is needed to build a conservatory and this is where a conservatory base comes in. A base can be made from many different materials but ultimately, your material will be dependent on your floor surface. For example, a raised base is used if your floor is sloped.

Conservatory base construction is similar to that of an extension to your home. Just because a conservatory is lighter however, it doesn’t necessarily mean that the foundation will be shallow. In order to know precisely how deep your foundation must be, the ground must be first excavated and inspected.

Foundations are laid before the conservatory base is built. This is to allow the rest of the structure to be built on top. There are many different types of bases which can be used. Your installer will be able to recommend the best type for your conservatory.

Types of Conservatory Base

Choosing Your Conservatory BaseThere are two main styles of conservatory bases: traditional build and steel bases. Traditional build involves your installer measuring and digging the foundations whereas a steel base is specifically designed for your conservatory.

Which Conservatory Base?

The conservatory base you choose will depend on your existing groundwork and conservatory style. Access to digging machines may be difficult, especially when building is close to your existing property. If there is no alternative, then sometimes foundations have to be dug by hand.

Speaking to a professional such as your conservatory installer is generally advised. They will be able to provide you with the information you need in order to make an informed decision. We recommend you speak to one of our trusted suppliers who will be able to offer their expert advice.

Conservatory Base: Traditional Build

Conservatory BaseYour installer will measure, dig and fill the foundations with concrete. This involves waiting for concrete to set in order for brickwork to begin.

This process can take weeks to complete, depending on the company chosen. Be prepared for your home to become a building site for that period.

Conservatory Base: Steel Base

A steel conservatory base includes a framework of steel beams which are put together to form a foundation.

A steel base conservatory will not require the same foundation technique used in a traditional build. Compares to the traditional build, there is virtually no waste and the process is generally a lot quicker. However, a steel base may not be the best foundation for your conservatory and property. Your trusted installer will be able to tell you if your groundwork is suitable.

Other Conservatory Base Styles

Concrete Conservatory Base

Conservatory Base StylesA concrete base is a popular choice. Easy to build, laying a concrete base is fairly simple.

The only disadvantage is the time it takes for the concrete to set. How quickly your concrete sets will depend on the time of year and current temperature.

If you are in a hurry to get your conservatory built then perhaps a concrete base isn’t’ the best options.

However, concrete bases are good for under floor heating. If you are looking to use your conservatory all year round then concrete is a good choice.

Wooden Conservatory Base

A wooden conservatory based is made using lengths of thick timber. The timber is secured together using bolts. This creates a strong and supportive base. A wooden base is often the best choice for a sloping area.

Raised Conservatory Base

This type of conservatory base has the walls take most of the conservatory weight. A raised based is mainly used if your conservator slopes into the garden. This conservatory base is more complex than the other main types. Not a straight forward base to build, this base is also more costly.

Conservatory Base Construction

Conservatory BaseBelow is a brief outline of a conservatory base construction. Methods will vary slightly from company to company and it of course depends on your individual specifications.

  1. Site Inspection
  • Selecting the site for your conservatory
  • Organising space for waste disposal
  • Preparing the ground

2. Preparation

  • Outline is marked
  • Digging begins

Conservatory Base3. Cavity Wall

  • The outer leaf of the cavity wall is built (outside ground level)
  • The inner leaf of the cavity wall is built ( inner to floor level)
  • Existing air bricks are transferred through the base work

4. Conservatory Floor

  • Footings are dug
  • Concrete is poured into the trench to form the foundations. This creates a protective membrane.
  • Concrete is floated to form a level surface area to built upon.
  • Any drainage pipes are identified and protected.

5. Base Completion 

  • Depending on specifications, cavity trays are installed. Standard flashing is also used.
  • Any remaining dwarf walls are built as requested by home owner
  • Walls are insulated

Conservatory Base Cost

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Choosing Your Conservatory Base



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