Natural Hydraulic Lime (NHL) 3.5 is ready for your historic masonry project!

Natural Hydraulic Lime 3.5

$46.00

Our Natural Hydraulic Lime 3.5 is typically used with old harder bricks and stone. We offer this item currently in 55lbs (25kg) bags. This stronger mortar still has all the properties of natural lime products. Its flexibility is perfect due to its softer properties than the building it is being adhered to. Contact us to get more information on our Natural Hydraulic Lime 3.5.

Description

Natural Hydraulic Lime (NHL) 3.5, by Roundtower , is a strong mortar option with all the flexibility that comes with natural lime. We recommend this product for historic structures built with harder brick or stone. Remember the mortar must be softer than the brick or stone it is matched with!   This product is not recommend for soft brick or for plaster or stucco.

Natural lime has higher permeability in general, and allows for moisture to enter and escape freely – unlike Portland mortar, which locks in moisture and cracks over time. NHL’s will set in the presence of water which makes it ideal for use in exterior applications.

Working temperatures should not be below 41 degrees F.  Dampen the wall before application.  Avoid rapid drying due to high temperatures or strong winds using appropriate curing methods. Protect fresh mortar from frost, rain, direct sun and strong wind for a minimum of 48 hours depending on the time of year.

Natural Hydraulic Lime (NHL) 3.5 comes dry in 55 pound bags with no artificial additives.  Mix with sharp sand at a ratio of 2 1/2 parts of Mason’s sand to 1 part NHL. Remember the color of the sand will largely determine the color of the mortar! And add our pigments for even more color variations! 

Read the installation guide below and feel free to contact us with questions or a custom quote for colors.

NHL Installation Guide

Safety Data Sheet

NHL Tech Sheet

NHL Coverage Sheet

Additional information

Weight 55 lbs
Dimensions 24 × 16 × 8 in
Bag Weight:

55 lbs (25kg)

Reviews

There are no reviews yet.

Only logged in customers who have purchased this product may leave a review.

TOP