FULL ARCHITECTURAL

SERVICES

We offer full architectural services from a new construction design and construction drawings, to layout and renovation consultation.

 

We offer healthier construction materials consultation.

 

Our consultation is based on an hourly fee, a flat fee or a subscription service.

DESIGN AND HEALTHY MATERIALS OPTIONS CONSULTATION

We offer full architectural services from a new construction design and construction drawings, to layout and renovation consultation.

 

We offer healthier construction materials consultation.

 

Our consultation is based on an hourly fee, a flat fee or a subscription service.

WE BRING HEMPCRETE / HEMPLIME WORKSHOP TO YOUR PROPERTY

We offer full architectural services from a new construction design and construction drawings, to layout and renovation consultation.

 

We offer healthier construction materials consultation.

 

Our consultation is based on an hourly fee, a flat fee or a subscription service.

Passionate About Our Mission to Make a Difference - For People and Environment

Applications:

 

We offer an alternative to the conventional construction

 

Exterior envelope – walls, roof insulation

Interior walls, furniture – paint, insulation, plaster board

New construction and renovation

 

Benefits of hemplime construction (blocks):

 

Hemplime construction is a superior way of building a home for many reasons:

 

  • Fire-resistant

Test are in progress to satisfy ASTM and building code requirements

 

  • Mold-resistant

Alkaline nature of lime prevents mold from growing

 

  • Insect-resistant

Alkaline nature of lime makes hemplime not very appealing to rats and mice

  • Termite-resistant

Hemp is embedded into lime making it impossible for termites to destroy it

 

  • High acoustic performance

Excellent sound-absorption qualities

  • Plant and earth materials – based

Hemp is grown without the need for pesticides, herbicides, and much water. It absorbs CO2, and aerates and removes heavy metals from the soil. It is an excellent rotation crop and a source of a building material.

 

  • Monolithic construction that helps prevent thermal bridging and air infiltration

 

One of the most important principles in quality construction is a tight envelope, which means a façade system that prevents air leakage into the space. Because of positive/negative pressure inside/outside of a building, air from the outside always tries to find a way to get inside of a structure. It usually finds a way through small masonry cracks, façade seams, at windows and doors and exterior wall pipe and electrical lines penetrations.

 

Cast-in-place hemplime wall provides a seamless 10-12” thick slab, that minimizes and in some cases eliminates any gaps due to tight installation, thus providing a better seal for the exterior walls and ceiling.

 

  • Eliminates thermal bridging

Another principle behind an efficient envelope is limiting thermal bridging. Thermal bridging happens when a structural member or any other element of the exterior wall or roof transmits exterior temperature into the interior. A lot of the building material suppliers build-in solutions to prevent thermal bridging, like window manufacturers. However, it still happens with structure. Our typical residential construction involves wood framing with insulation in between and drywall and vapor barrier attached on both sides of the studs. This means that wood studs become our thermal bridge, literally connecting exterior to interior with the wood insulation value of R1, instead of R19, recommended in some zones.

 

There are a few ways to mitigate this problem.

You can use less framing material – instead of 16” o.c., it could be 24” o.c., more efficient and cheaper, but not for any type of construction.

 

You can install staggered framing, but it requires more wood, not cost efficient.

 

Or you can encapsulate the studs with an insulating material. This is the principle behind hemplime – it goes on inside and outside of the framing, thus minimizing thermal bridging.

  • Thermal mass:

Another unique aspect of hemplime is a quality similar to masonry construction. As lime calcifies over time and turns back into stone, it acts as masonry or stone construction from the moment it is installed. In the winter it absorbs the winter sun heat and at night it releases it. In the summer it absorbs the coolness of the night and keeps it cool on a hot summer day.

 

As a result of this unique quality, the ventilation and fresh air can enter the space through windows, and not a HVAC machine, without the fear of loosing the heat, as walls will continue emitting the heat collected during the day.

  • Vapor-permeable – allows for humidity control inside a building

In the conventional construction we use the Pink insulation – the typical standard fiber-glass insulation that is incompatible with moisture. In fact, it looses its insulation properties if a water leak occurs in the ceiling or a wall.

 

Hemplime wall will absorb the moisture on the outside during the rain or humid weather, and then will slowly dry out, and add moisture into the dry air inside. It will create the most comfortable environment during the dry and hot winter months.

 

 

Summary:

Overall, hemplime provides an excellent alternative to the traditional construction.

Here at Coexist, we want to expand the US construction standards and start a healthy building revolution.

 

However,

 

Hemplime construction has its drawbacks.

 

  • It has a price tag. Currently hemp hurd is imported from Europe and binder lime is sources from Europe as well and mixed and combined with pozzolones here in the US.

  • Cast-in-place can take a long time on site

  • It’s messy

  • It needs a crew of people, all of whom can be trained on site. Because skill levels can be different, or non-existent in the hemplime field, the final product will depend on each individual’s work and how well the work gets adjusted as it progresses.

 

A prefabricated version of hemplime, such as a block has advantages:

 

  • It comes in the size of a standard CMU block, a familiar and comfortable to handle size for the masons; it can even be installed by unskilled labor and even a homeowner him/herself

  • Installation is quick and clean, blocks are delivered by pallets

  • Block construction is not considered monolithic, because mortar joints can act as miniature thermal bridges. However, these joints are 1/8” thick and would be covered with plaster or other wall finishes. Ultimately, the performance is very similar, if not the same, as cast-in-place.

  • Blocks are made and cured at the factory under controlled conditions; every block will deliver the same performance according to the tested results. Cast—in-place, however, can vary due to different skill levels of the workers.

Certifications

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Qualifications

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Contact

Tel: 1-800-913-1152

info@coexist.build