ᐅ Why is shading especially important in newly constructed houses?

Created on: 29 Aug 2016 13:33
G
Grym
It is often argued that shading is especially important in new builds to prevent overheating in summer. But why is that exactly?

The insulation in a new building works both ways. Whether it’s cold or heat, the house takes much longer to adopt the outside temperature compared to an older house with poorer insulation.

Now, regarding the windows themselves. Shouldn’t solar energy pass through a less effective double-glazed window faster than through a modern triple-glazed window?

Why do many say that shading is PARTICULARLY important in new builds during summer? I would rather think the opposite: a new build is better insulated against heat from outside. Triple-glazed windows with a low U-value keep heat out better than old double-glazed windows.
M
matte
29 Aug 2016 19:15
Because in city centers, there are usually terraced houses.

On the left and right are other houses, so there are no projecting components on the exterior.
G
Grym
29 Aug 2016 19:38
Peanuts74, you might be confusing "city villa" with townhouse. Try searching for "townhouse." And multi-family buildings in inner cities are often constructed in perimeter block development (search for "perimeter block" or "perimeter block old building" or "perimeter block development").
E
EinMarc
29 Aug 2016 19:45
Sebastian79 schrieb:

I installed wall mounting boxes like these, where everything is already inside and can be easily retrofitted later.

That sounds interesting! Unfortunately, I can’t find anything related under "wall mounting box climate" or similar search terms. Could you help me with the right search term or, if necessary, share a link here in the discussion? (I still think the restriction on links is unnecessary ^^)
P
Peanuts74
29 Aug 2016 20:22
Grym schrieb:
Peanuts74, you might be confusing "Stadtvilla" and townhouse? Try searching for "Townhouse." And multi-family buildings in city centers are often built as perimeter block development (search for "Blockrand," "Blockrand Altbau," or "Blockrandbebauung").

No, it’s clear to me what a Stadtvilla is.
However, I find this term inappropriate for the houses we are discussing here. A house on a 400m² (4,300 sq ft) plot doesn’t become a Stadtvilla just because it has a hipped roof. To me, Stadtvillas are rather older houses on park-like grounds.

It’s more a regional thing, as in Saarland only a detached house counts as a proper house.
S
Sebastian79
29 Aug 2016 21:10
Grym, just trust people who have actually built – this "problem" is one that everyone consistently experiences...

@EinMarc:

Just search for installation box PB 300 on Google, and you'll find what you need.
K
Knallkörper
29 Aug 2016 21:15
andimann schrieb:
Hello,

wow..

Really “only” 3500 euros? How should one imagine that? Do ventilation ducts then come from the ceiling of the upper floor, similar to a mechanical ventilation system with heat recovery?

What is the power consumption of such an air conditioning system? In other words, how much electricity does it use?

We are slowly approaching the final stage; the screed is currently drying, but maybe someday we want to retrofit something like this... Our attic is empty and unused....

Best regards,

Andreas

That will be a unit installed in a galvanized air duct located in the loft space. Supply and exhaust air are distributed to our three rooms on the upper floor, so there are corresponding outlets in the ceilings of the rooms. Yes, they also come in attractive designs. From the loft, power and lines for refrigerant and condensate run up to the garage roof, where the condenser is practically invisible. At least that’s how I have planned it so far. I might still change the plan so that the rooms can be conditioned independently. The planned unit has a power input of 2500 watts. I might even connect the unit to an off-grid solar system, as cooling demand and solar yield complement each other well. However, it probably won’t be cost-effective. Purely for fun.