Month: April 2015


Using different elements from different EWI systems

29 04/15
Using different elements from different EWI systems

Using different elements from different EWI systems

At Be Con­struc­tive we install lots of dif­fer­ent solid wall insu­la­tion sys­tems from dif­fer­ent man­u­fac­tur­ers, from EWI-pro, Insta to Sto – they all have their mer­its.

What is becom­ing clear though is that com­pa­nies are using dif­fer­ent ele­ments from dif­fer­ent solid wall insu­la­tions to carry out jobs, so for exam­ple the primers come from one man­u­fac­turer, while the ren­ders come from EWI Pro. Remem­ber, these sys­tems have been devel­oped and refined by the man­u­fac­tures to work together pro­vid­ing you with a great energy sav­ing, pro­tec­tive layer on your home.

Why are installers using different elements from different systems?

Well the main rea­son is price – as the indus­try has grown (and the Gov­ern­ment backed Green Deal Home Improve­ment scheme has really helped with this) more com­pa­nies have entered the mar­ket. This has brought some huge ben­e­fits to the indus­try because gone are the days that com­pa­nies can charge through the nose for works to be car­ried out. Once exam­ple of this is a cus­tomer we had that orig­i­nally received a quote for solid wall insu­la­tion 18 months ago for £27000 for just 100m2 of wall, we car­ried out this job for just under £10,000 which when you included the £6,000 grant took the final cost to the cus­tomer to just over £4,000. Obvi­ously this is a good thing – more com­pe­ti­tion means that these uncom­pet­i­tive sup­pli­ers will be his­tory in the near future!

Does insulation works in summer?

22 04/15
Does insulation works

be-ewi

Does insulation work in the summer?

Most peo­ple assume that insu­la­tion is some­thing that keeps their home warmer in colder weather. While that is true, the actual impact of insu­la­tion is to slow the move­ment of heat between two spaces. What this means is that dur­ing the sum­mer months the insu­la­tion will also pre­vent your home from over­heat­ing.

How insulation works?

To under­stand why insu­la­tion works well in both warm and cold weather, let’s take a look at how insu­la­tion actu­ally works.

Bulk insu­la­tion, like wool or fibre­glass, and indeed our exter­nal wall insu­la­tion, works by trap­ping lit­tle bub­bles of air within the struc­ture of the mate­r­ial. The EPS exter­nal wall insu­la­tion for exam­ple is 98% air, so it is extremely light­weight!

Air is an extremely good insu­la­tor when it is trapped and unable to move around, so by trap­ping lit­tle pock­ets of air within the insu­la­tion, you will actu­ally pro­duce a great insu­lat­ing effect. And because this process is about pre­vent­ing heat trans­fer, it doesn’t mat­ter if it is warmer out­side than inside, or colder out­side. Either way, the warm air is not going to travel across that bar­rier, and the insu­la­tion will do its job.

The other type of insu­la­tion often used in homes is foil insu­la­tion. Rather than trap­ping air bub­bles in its bulk, foil uses its reflec­tive sur­face to deflect heat back from where it came. Whether that heat is com­ing from out­side or inside. A com­mon place that this sort of insu­la­tion is found is in loft and roof spaces. Some­times you will see a com­bi­na­tion of the two, with a shiny foil insu­la­tion sur­round­ing a bulky wool-like insu­la­tion.

A fantastic but a premium solution for external insulation and mitigating the effects of heat in the summer could be the wood fibre insulation. This can be installed with a basecoat and silicone top coat – once fully finished provides a decrament layer against the heating effects of the sun in the summer months.

Transfer Your GDHIF Voucher To Us

15 04/15
Transfer Your GDHIF Voucher To Us

Transfer Your GDHIF Voucher To Us

At Be Con­struc­tive, we pride our­selves on our exper­tise when it comes to installing solid wall insu­la­tion on homes as well as the level of cus­tomer ser­vice we offer.  That is why more and more peo­ple are choos­ing Be Con­struc­tive as their installer of choice to carry out the insu­la­tion works on their prop­er­ties.

We are a PAS2030 cer­ti­fied installer of solid wall insu­la­tion and there­fore if you would like us to install this for you under either the Green Deal scheme (finance) or the Green Deal Home Improve­ment scheme (grant) get in touch now!

Existing GDHIF Voucher for solid wall insulation – call us now!

We know that solid wall insu­la­tion is a size­able invest­ment to make on your home, so make sure you are in the best pos­si­ble hands! If you have an exist­ing GDHIF voucher for solid wall insu­la­tion and you would like us to pro­vide you with a FREE com­par­i­son quote to carry out the works please call us today on 0208 144 0897.

We install solid wall insu­la­tion across Greater Lon­don and the sur­round coun­ties and impor­tantly the price we agree at the start of the job won’t change – we don’t add hid­den charges along the way allow­ing you to bud­get for the works bet­ter!

Internal vs External Solid Wall Insulation

01 04/15
solid wall insulation

What is external solid wall insulation?

Exter­nal solid wall insu­la­tion – or EWI – is usu­ally in the form of expanded poly­styrene insu­la­tion board, 100mm thick, which is applied to the out­side of the prop­erty with adhe­sive and plas­tic bolts for a dou­ble strength bond with min­i­mal cold bridg­ing. This is then ren­dered to cre­ate a really smart fin­ish in a vari­ety of colours.

What is Internal solid wall insulation?

 Internal solid wall insulation very sim­i­lar to external wall insulation, except that the insu­la­tion is applied to the inside of the prop­erty rather than the out­side. Since it gets hit less by the ele­ments on the inside, the final fin­ish is less ‘pro­tec­tive’ but it still goes a huge way to reduc­ing your energy bills.

Inter­nal insu­la­tion typ­i­cally takes the form of PIR board like celo­tex, applied to the inter­nal walls, or a stud wall with plas­ter­board then

placed over the top. This then means that the insu­la­tion is sand­wiched between the plas­ter­board and the brick wall.

Should you insulate internally or externally?

In our opin­ion, the best option is to insu­late exter­nally (although we can insu­late you prop­erty inter­nally if exter­nal wall insu­la­tion is pro­hib­ited for any rea­son e.g. plan­ning con­straints).

The advantages of insulating solid walls externally

This is con­sis­tent across both inter­nal and exter­nal solid wall insu­la­tion – they both help improve the energy effi­ciency of the prop­erty, but the advan­tage of exter­nal over inter­nal is you are not lim­ited by space. Insu­lat­ing inter­nally obvi­ously shrinks rooms, but doing so exter­nally has no impact on this – so while you could eas­ily attach 150mm of exter­nal wall insu­la­tion to a solid wall, if you were to do this inter­nally the rooms would be much smaller which when you take into account today’s prop­erty prices is a huge issue.