Removing Climbing Plants And Creepers From Masonry
- Procedure code:
- Hspg Prepared For Nps - Sero
- Unit Masonry
- Last Modified:
REMOVING CLIMBING PLANTS & CREEPERS FROM MASONRY
A. This procedure includes guidance on removing climbing
plants from masonry.
B. It is important to remove heavy vegetative growth from
masonry, as its presence can pose many problems, such as
holding moisture against the masonry surface, blocking
gutters and downspouts, scouring soft wall surfaces,
eroding mortar and hindering or limiting access for
maintenance inspections and repairs.
C. See 01100-07-S for general project guidelines to be
reviewed along with this procedure. These guidelines
cover the following sections:
1. Safety Precautions
2. Historic Structures Precautions
4. Quality Assurance
5. Delivery, Storage and Handling
6. Project/Site Conditions
7. Sequencing and Scheduling
8. General Protection (Surface and Surrounding)
These guidelines should be reviewed prior to performing
this procedure and should be followed, when applicable,
along with recommendations from the Regional Historic
Preservation Officer (RHPO).
A. Chevron Chemical Co.
Ortho Consumer Products Division
P.O. Box 5047
San Romon, CA 94583-0947
B. Monsanto Co.
St. Louis, MO 63167
800/225-2883 or 314/694-1000
A. Ammonium Sulfamate: (crystals)
CAUTION: THE USE OF AMMONIUM SULFAMATE MAY BE DEPENDENT
UPON REGIONAL, STATE OR LOCAL RESTRICTIONS.
ENVIRONMENTAL CONDITIONS AND APPROPRIATENESS SHOULD BE
1. Past use was a base for weed killers; Not now
readily available; Substitute any brand weed killer
2. Available from chemical supply house, construction
specialties distributor, garden and lawn supply
B. A commercial weed killer such as "Brush-B-Gon" (Chevron
Chemical Co.), "Round-Up" (Monsanto Co.), or approved
NOTE: CONSULT WITH RHPO ABOUT SELECTION OF WEED KILLER
TO AVOID USING ONE WHICH MIGHT DAMAGE THE MASONRY.
FOLLOW MANUFACTURERS INSTRUCTIONS.
A. Lopping and/or pruning shears
B. Garden hose and nozzle
C. Stiff bristle brushes (non-metallic)
D. Wood scrapers, knife blades and spatulas
A. Inspect building at the beginning of the growing season
and monthly during the growing season for signs of change
in drainage patterns and evidence of plant material
damaging the building.
B. Examine the wall surface to determine the amount of
damage being caused by the presence of the plant growth.
C. Check to see if the vine roots have penetrated the mortar
D. Notify the RHPO if mortar joints, or the masonry units
themselves, are found to be deteriorated due to the
roots, or to the weight of the plant growth.
3.02 ERECTION, INSTALLATION, APPLICATION
A. Using loping or pruning shears, cut vine trunk(s) about
four inches (4") above grade and remove a section of stem
above this cut. Leave approximately a six inch (6") gap
between the stump of the trunk and the stem.
B. Make vertical cuts through the bark of the stump and peel
the bark back slightly to expose about one inch (1") of
the inner wood.
C. Apply a thick paste made from ammonium sulfamate
crystals, or spray apply weed killer to the exposed
surfaces of the stump. BE CAREFUL NOT TO GET ANY ON THE
D. Allow the vines to die naturally, then remove the dried
tendrils and roots, taking care not to remove bits of
masonry and mortar.
NOTE: DO NOT PULL THE VINES OFF OF THE WALL SURFACE.
1. Large, heavy, mature vines may be more easily
removed by cutting the network of stems into
CAUTION: MAKE SURE THAT FALLING PLANT MATERIAL
DOES NOT DAMAGE THE BUILDING, THE SURROUNDING
LANDSCAPING, OR INJURE THE WORKER.
2. If the root system of mature vines is extensive, it
may be necessary to remove individual roots from
each mortar joint.
a. Perform repairs to the masonry (including and
resetting individual bricks or stones) as
removal proceeds to maintain the integrity of
the wall surface.
b. Do not leave any dead wood within joints of
the wall. As the wood decays, voids may be
left with the wall that can lead to more
E. Gently scrub the wall with a stiff, non-metallic bristle
brush and clean, clear water (sprayed at low pressure) to
remove any remaining dried plant material.
G. For root pods that are more difficult to remove, try
using low pressure steam while brushing with a stiff,
non-metallic bristle brush.
END OF SECTION