TWITTER TALK

Get the right insulation with help from John O’Brien, associate director for construction innovation at BRE (Building Research Establishment)

@HB With so many different types of insulation available, where’s best to start?

@BRE Go for the cheapest product that gets the best result. Start at the loft and work down

@HB How do we choose the right material?

@BRE Depends where you’re using it. In the loft, for instance, if there’s no disturbance, lots of cheap mineral wool is brilliant

@HB Do unusual materials such as sheep’s wool and hemp work as well?

@BRE They all work well if used correctly. But it’s important to have it installed properly

@HB Does using natural and recycled insulation help reduce the carbon and chemical footprint of a renovation?

@BRE We need to cut the oil we use, so alternative materials are vital. Using by-products also helps and all insulation reduces energy in the long run

@HB We’ve heard cork is now being used

@BRE Yes – it’s renewable, fire proof, and can be made into a range of insulation

@HB What would it be best suited for?

@BRE Cork is breathable so may benefit older houses where the walls need to breathe. Wood fibre has a similar effect

@HB Which natural insulation products would you recommend?

@BRE Depends on the house but mix it up – combine the best natural options with the latest hi-tech materials